Index: /Users/cezar/brlcad/doc/docbook/books/en/BRL-CAD_Tutorial_Series-VolumeIV.xml
===================================================================
--- /Users/cezar/brlcad/doc/docbook/books/en/BRL-CAD_Tutorial_Series-VolumeIV.xml	(revision 53879)
+++ /Users/cezar/brlcad/doc/docbook/books/en/BRL-CAD_Tutorial_Series-VolumeIV.xml	(working copy)
@@ -166,7 +166,7 @@
 
 	  <mediaobject><imageobject><imagedata fileref="test_img.eps" format="EPS"/></imageobject></mediaobject>
 	</figure>
-	<table><info><title>BREP Terminology</title></info>
+	<table><title>BREP Terminology</title>
 
 	  <tgroup cols="2">
 	    <tbody>
@@ -196,7 +196,7 @@
 	  </tgroup>
 	</table>
       <para>In the end, although there are benefits to using the BREP methodology (e.g., ease of use, software availability/compatibility, etc.), BRL-CAD developers and vulnerability analysts have found CSG modeling to be the best approach in terms of model accuracy, storage efficiency, precision, and analysis speed.</para>
-      <table><info><title>CSG or BREP?</title></info>
+      <table><title>CSG or BREP?</title>
 
 	<tgroup cols="2">
 	  <tbody>
@@ -224,7 +224,7 @@
       <para>Older BRL-CAD databases may be upgraded to the current database (db) format using the <command>dbupgrade</command> utility. To execute this command, the user types the following command at the command-line prompt:</para>
       <para><command>dbupgrade</command> <filename>oldformat.g</filename> <filename>currentformat.g</filename></para>
       <para>This command reads an existing input.g database (in the older format) and writes a new output.g in the latest format. Remember that all BRL-CAD geometry files are designated by a ``.g'' suffix. Thus, the conversion commands discussed in the following sections use a ``g'' to represent the BRL-CAD file format (e.g., <command>asc2g</command>, <command>dxf-g</command>, <command>g-acad</command>, etc.).</para>
-      <table><info><title>What About Databases in the Old Format?</title></info>
+      <table><title>What About Databases in the Old Format?</title>
 
 	<tgroup cols="2">
 	  <tbody>
@@ -238,7 +238,7 @@
     </section>
     <section><info><title>Converters Currently Available in BRL-CAD</title></info>
 
-      <table><info><title>BRL-CAD conversion capabilities.</title></info>
+      <table><title>BRL-CAD conversion capabilities.</title>
 
 	<tgroup cols="3">
 	  <thead>
@@ -372,7 +372,7 @@
     <section><info><title>General Information About Converting to BRL-CAD</title></info>
 
       <para><xref linkend="tbl_import_converters"/> contains the primary file formats (other than ASCII) that currently convert to BRL-CAD. Note that, as discussed previously, the "-g" designation at the end of each converter name indicates that the converted file will be in BRL-CAD's standard geometry (.g) format.</para>
-      <table xml:id="tbl_import_converters"><info><title>BRL-CAD import converters</title></info>
+      <table xml:id="tbl_import_converters"><title>BRL-CAD import converters</title>
 
 	<tgroup cols="2">
 	  <thead>
@@ -444,7 +444,7 @@
 
       <para>The DXF format allows for the specification of the units used in the DXF file; however, not all DXF files include this information. Thus, if units information is not found in the DXF file, millimeters (which is also the default and underlying unit of measure in BRL-CAD) is the assumed unit of measure. Of course, if millimeters is not the right choice for a particular user or application, the <option>-s</option> (scale) option can be used. This option and the other available options for the <command>dxf-g</command> converter are discussed in the text that follows.</para>
       <para>When using this converter, polygons and meshes are converted to BOT primitives. Each layer becomes a region. Lines, circles, and arcs become n-manifold geometry (NMG) objects, and points become spheres.</para>
-      <table><info><title>NMG Primitive</title></info>
+      <table><title>NMG Primitive</title>
 
 	<tgroup cols="2">
 	  <tbody>
@@ -481,7 +481,7 @@
 
  <para>Elysium Inc. was founded in 1984 to provide product structure synchronization and compatibility between different CAD systems. The company claims to hold the industry's highest translation success rate and relies on three of its products (CADporter, CADdoctor, and CADserver) to convert geometry between a large number of formats, including Pro/E, Unigraphics, ABAQUS/CAE, ACIS, CATIA, Inventor, I-deas, Metrix Build!IT, One Space Designer, Parasolid, and SolidWorks (Elysium, 2003).</para>
       <para>The <command>enf-g</command> converter was originally written when BRL-CAD developers needed an intermediate format-the Elysium neutral facetted file format-to allow the conversion of Unigraphics geometry to BRL-CAD. The converter converts each part to a BRL-CAD region consisting of one BOT primitive. Ident numbers are incremented for each region. If a part name mapping file is provided, part names in the input file will be output using the corresponding names from the mapping file. The part name mapping file may look similar to the following:</para>
-      <table frame="none"><info><title>Part name mapping</title></info>
+      <table frame="none"><title>Part name mapping</title>
 
 	<tgroup cols="2">
 	  <tbody>
@@ -538,10 +538,10 @@
 	  <para><option>-v</option> - verbose; prints out progress information.</para>
 	</listitem>
 	<listitem>
-	  <para><option>-i <filename>input_euclid_db</filename></option> - sets input file name (default is <filename>stdin</filename>).</para>
+	  <para><option>-i <replaceable>input_euclid_db</replaceable></option> - sets input file name (default is <parameter>stdin</parameter>).</para>
 	</listitem>
 	<listitem>
-	  <para><option>-o <filename>output_brlcad_db</filename></option> - sets output file name (default is <filename>stdout</filename>).</para>
+	  <para><option>-o <replaceable>output_brlcad_db</replaceable></option> - sets output file name (default is <parameter>stdout</parameter>).</para>
 	</listitem>
 	<listitem>
 	  <para><option>-d tolerance_distance</option> - sets distance calculation tolerance (in millimeters) (default is 0.005).</para>
@@ -550,14 +550,14 @@
 	  <para><option>-n</option> - produces NMG primitives (default is BOT primitives).</para>
 	</listitem>
 	<listitem>
-	  <para><option>-x lvl</option> - sets librt debug flag (see <filename>raytrace.h</filename> in the binary distribution for definitions of DEBUG_xxx).</para>
+	  <para><option>-x lvl</option> - sets librt debug flag (see <parameter>raytrace.h</parameter> in the binary distribution for definitions of DEBUG_xxx).</para>
 	</listitem>
 	<listitem>
-	  <para><option>-X lvl</option> - sets NMG library debug flag (see <filename>nmg.h</filename> in the binary distribution for definitions of DEBUG_xxx).</para>
+	  <para><option>-X lvl</option> - sets NMG library debug flag (see <parameter>nmg.h</parameter> in the binary distribution for definitions of DEBUG_xxx).</para>
 	</listitem>
       </itemizedlist>
       <para>For more information about the EUCLID file format and import possibilities, see the MDTVISION web site at <link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://support.mdtvision.com">http://support.mdtvision.com</link> (MDTVISION, 2003).</para>
-      <table><info><title>Header file note</title></info>
+      <table><title>Header file note</title>
 
 	<tgroup cols="2">
 	  <tbody>
@@ -592,19 +592,19 @@
 	    <para><option>-w</option> - prints warnings about creating default names.</para>
 	  </listitem>
 	  <listitem>
-	    <para><option>-o <filename>plot_file_name</filename></option> - creates a UNIX plot file of all CTRI and CQUAD elements processed.</para>
+	    <para><option>-o <replaceable>plot_file_name</replaceable></option> - creates a UNIX plot file of all CTRI and CQUAD elements processed.</para>
 	  </listitem>
 	  <listitem>
 	    <para><option>-c component_list</option> - processes only the listed region ids; may be a list (e.g., 3001,4082,5347) or a range (e.g., 2314-3527).</para>
 	  </listitem>
 	  <listitem>
-	    <para><option>-m <filename>muves_file_name</filename></option> - creates a MUVES warnings file containing CHGCOMP and CBACKING elements.</para>
+	    <para><option>-m <replaceable>muves_file_name</replaceable></option> - creates a MUVES warnings file containing CHGCOMP and CBACKING elements.</para>
 	  </listitem>
 	  <listitem>
-	    <para><option>-b lvl</option> - sets libbu debug flag (see <filename>bu.h</filename> in the binary distribution for definitions of BU_DEBUG_xxx).</para>
+	    <para><option>-b lvl</option> - sets libbu debug flag (see <replaceable>bu.h</replaceable> in the binary distribution for definitions of BU_DEBUG_xxx).</para>
 	  </listitem>
 	  <listitem>
-	    <para><option>-x lvl</option> - sets librt debug flag (see <filename>raytrace.h</filename> in the binary distribution for definitions of DEBUG_xxx).</para>
+	    <para><option>-x lvl</option> - sets librt debug flag (see <replaceable>raytrace.h</replaceable> in the binary distribution for definitions of DEBUG_xxx).</para>
 	  </listitem>
 	</itemizedlist>
       </section>
@@ -615,7 +615,7 @@
 	<para>The options for the command are as follows:</para>
 	<itemizedlist>
 	  <listitem>
-	    <para><option>-f <filename>fastgen.rp</filename></option> - specifies preprocessed FASTGEN file (default is <filename>stdin</filename>).</para>
+	    <para><option>-f <replaceable>fastgen.rp</replaceable></option> - specifies preprocessed FASTGEN file (default is <parameter>stdin</parameter>).</para>
 	  </listitem>
 	  <listitem>
 	    <para><option>-a</option> - processes phantom armor.</para>
@@ -642,10 +642,10 @@
 	    <para><option>-6</option> - processes plate mode triangles as ARB6 solids (overrides p option for triangles).</para>
 	  </listitem>
 	  <listitem>
-	    <para><option>-i <filename>group.file</filename></option> - specifies group labels source file.</para>
+	    <para><option>-i <replaceable>group.file</replaceable></option> - specifies group labels source file.</para>
 	  </listitem>
 	  <listitem>
-	    <para><option>-m <filename>mat.file</filename></option> - specifies materials information source file.</para>
+	    <para><option>-m <replaceable>mat.file</replaceable></option> - specifies materials information source file.</para>
 	  </listitem>
 	  <listitem>
 	    <para><option>-r</option> - reverses normals for plate mode triangles.</para>
@@ -654,10 +654,10 @@
 	    <para><option>-d lvl</option> - sets debug level.</para>
 	  </listitem>
 	  <listitem>
-	    <para><option>-x lvl</option> - sets librt debug flag (see <filename>raytrace.h</filename> in the binary distribution for definitions of DEBUG_xxx).</para>
+	    <para><option>-x lvl</option> - sets librt debug flag (see <parameter>raytrace.h</parameter> in the binary distribution for definitions of DEBUG_xxx).</para>
 	  </listitem>
 	  <listitem>
-	    <para><option>-X lvl</option> - sets librt NMG debug flag (see <filename>nmg.h</filename> in the binary distribution for definitions of DEBUG_xxx).</para>
+	    <para><option>-X lvl</option> - sets librt NMG debug flag (see <parameter>nmg.h</parameter> in the binary distribution for definitions of DEBUG_xxx).</para>
 	  </listitem>
 	  <listitem>
 	    <para><option>-T tolerance_distance</option> - sets distance tolerance (in inches).</para>
@@ -733,10 +733,10 @@
       <para>The options for the command are as follows:</para>
       <itemizedlist>
 	<listitem>
-	  <para><option>-i <filename>NASTRAN_input_file</filename></option> - sets input NASTRAN file (default is <filename>stdin</filename>).</para>
+	  <para><option>-i <replaceable>NASTRAN_input_file</replaceable></option> - sets input NASTRAN file (default is <filename>stdin</filename>).</para>
 	</listitem>
 	<listitem>
-	  <para><option>-o <filename>output.g</filename></option> - sets output file name (default is "nastran.g").</para>
+	  <para><option>-o <replaceable>output.g</replaceable></option> - sets output file name (default is "nastran.g").</para>
 	</listitem>
 	<listitem>
 	  <para><option>-n</option> - produces NMG primitives (default is BOT primitives).</para>
@@ -765,7 +765,7 @@
       <para>The conversion of geometry from Pro/E to BRL-CAD is a two-stage process. This converter first produces the ASCII form of BRL-CAD databases. The user then converts these databases to binary form using the <command>asc2g</command> utility.</para>
       <para>In addition, because Pro/E files for most combat vehicles are so large (often requiring a stack of CDs to store them), entire geometries typically cannot be loaded all at once. Thus, the BRL-CAD user often has to convert geometry system by system (e.g., engine, transmission, and suspension) and then concatenate (i.e., join) them together in a single BRL-CAD geometry file. For more detailed information about this process, see the discussion on dbconcat in Volume III of this tutorial series.</para>
       <para>Pro/E makes extensive use of referenced geometry. As discussed in the previous volume of this tutorial series (see section 5 of Butler et al. [2003]), referencing is the method by which multiple occurrences of objects are created by referring to a single object numerous times with different orientations and locations for each reference. These references are duplicated in BRL-CAD using combinations and transformation matrices. In some cases-such as when geometry is used with vulnerability codes that require each region to have a unique ident number-users may need to use the <command>xpush</command> command in MGED after the conversion is complete to replace the references with real geometry. For more information about this procedure, users should consult MGED's on-line help or the <command>xpush</command> entry in volume II of this tutorial series (see appendix A of Butler et al. [2001]).</para>
-      <table><info><title>Keys to Converting Pro/E Geometry</title></info>
+      <table><title>Keys to Converting Pro/E Geometry</title>
 
 	<tgroup cols="2">
 	  <tbody>
@@ -861,10 +861,10 @@
 	  <para><option>-n</option> - produces NMG primitives (default is BOT primitives).</para>
 	</listitem>
 	<listitem>
-	  <para><option>-i <filename>input.tkl</filename></option> - specifies the input TANKILL file (default is <filename>stdin</filename>).</para>
+	  <para><option>-i <replaceable>input.tkl</replaceable></option> - specifies the input TANKILL file (default is <filename>stdin</filename>).</para>
 	</listitem>
 	<listitem>
-	  <para><option>-o <filename>output.g</filename></option> - specifies the output BRL-CAD file (default is <filename>tankill.g</filename>).</para>
+	  <para><option>-o <replaceable>output.g</replaceable></option> - specifies the output BRL-CAD file (default is <filename>tankill.g</filename>).</para>
 	</listitem>
 	<listitem>
 	  <para><option>-k</option> - keeps components with id = 1001 (normally skipped).</para>
@@ -876,7 +876,7 @@
 	  <para><option>-X lvl</option> - sets NMG library debug flag (see <filename>nmg.h</filename> in the binary distribution for definitions of DEBUG_xxx).</para>
 	</listitem>
       </itemizedlist>
-      <para>For more information on the TANKILL file format and import possibilities, contact the <orgname>Advantage Business Group</orgname> at <address><othername>the Barbician</othername> <street>East Street</street> <city>Farnham, Surrey</city> <postcode>GU9 7TB</postcode></address> or visit the web site at <link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://www.advantage-business.co.uk"><uri>http://www.advantage-business.co.uk</uri></link> (Advantage Business Group, 2003).</para>
+      <para>For more information on the TANKILL file format and import possibilities, contact the <orgname>Advantage Business Group</orgname> at <address><otheraddr>the Barbician</otheraddr> <street>East Street</street> <city>Farnham, Surrey</city> <postcode>GU9 7TB</postcode></address> or visit the web site at <link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://www.advantage-business.co.uk"><uri>http://www.advantage-business.co.uk</uri></link> (Advantage Business Group, 2003).</para>
     </section>
     <section><info><title>Converting From Unigraphics Format</title></info>
 
@@ -897,7 +897,7 @@
 	 <para><option>-i initial_ident</option> - specifies the ident number for the first region created by the conversion. Subsequent regions are assigned sequential ident numbers.</para>
 	</listitem>
 	<listitem>
-	 <para><option>-n <filename>part_name_file</filename></option> - specifies a file containing a mapping of Unigraphics part and/or assembly names to BRL-CAD object names. If this file is provided, it will be used to create object names in the BRL-CAD model. The format of this file is simply a line per part, with the Unigraphics part/assembly name followed by the desired BRL- CAD object name, separated by white space. Note that the usual restrictions for BRL-CAD object names apply (e.g., no spaces, no special symbols, etc.) For a detailed discussion of recommended naming schemes and restrictions, see section 4 of Volume III (Butler et al., 2003).</para>
+	 <para><option>-n <replaceable>part_name_file</replaceable></option> - specifies a file containing a mapping of Unigraphics part and/or assembly names to BRL-CAD object names. If this file is provided, it will be used to create object names in the BRL-CAD model. The format of this file is simply a line per part, with the Unigraphics part/assembly name followed by the desired BRL- CAD object name, separated by white space. Note that the usual restrictions for BRL-CAD object names apply (e.g., no spaces, no special symbols, etc.) For a detailed discussion of recommended naming schemes and restrictions, see section 4 of Volume III (Butler et al., 2003).</para>
 	</listitem>
 	<listitem>
 	  <para><option>-R refset_name</option> - specifies a desired reference set (which Unigraphics uses to provide additional control over assembly components), overriding the reference set specified in the Unigraphics model.</para>
@@ -912,7 +912,7 @@
 	  <para><option>-u</option> - extracts surface normals from the Unigraphics model. Using this option will result in a BRL-CAD model that is significantly larger than when not using it, but raytraced objects will appear much smoother.</para>
 	</listitem>
 	<listitem>
-	  <para><option>-o <filename>output.g</filename></option> - specifies the name of the file to receive the BRL-CAD model.</para>
+	  <para><option>-o <replaceable>output.g</replaceable></option> - specifies the name of the file to receive the BRL-CAD model.</para>
 	</listitem>
 	<listitem>
 	  <para><option>-t tolerance_distance</option> - specifies the minimum distance (in millimeters) allowed between distinct vertices. Vertices closer than this minimum will be considered to be the same vertex (the default value is 0.005 mm).</para>
@@ -938,13 +938,13 @@
       <para>The options for the command are as follows:</para>
       <itemizedlist>
 	<listitem>
-	  <para><option>-c <filename>coord_file_name</filename></option> - sets the input vertex coordinates file name (required).</para>
+	  <para><option>-c <replaceable>coord_file_name</replaceable></option> - sets the input vertex coordinates file name (required).</para>
 	</listitem>
 	<listitem>
-	  <para><option>-e <filename>elements_file_name</filename></option> - sets the input faces file name (required).</para>
+	  <para><option>-e <replaceable>elements_file_name</replaceable></option> - sets the input faces file name (required).</para>
 	</listitem>
 	<listitem>
-	  <para><option>-o <filename>output_file_name</filename></option> - sets the output BRL-CAD database name (default is <filename>viewpoint.g</filename>).</para>
+	  <para><option>-o <replaceable>output_file_name</replaceable></option> - sets the output BRL-CAD database name (default is <filename>viewpoint.g</filename>).</para>
 	</listitem>
 	<listitem>
 	  <para><option>-t tolerance_distance</option> - sets distance calculation tolerance (in millimeters) (default is 0.005).</para>
@@ -958,7 +958,7 @@
 
       <para><xref linkend="tbl_export_converters"/> contains the primary file formats (other than ASCII) to which BRL- CAD currently converts. Once again, the "g-" designation at the beginning of each converter name indicates that the conversion process begins with BRL-CAD's standard geometry (.g) format.</para>
       <para>Note that most of the BRL-CAD export converters operate by tessellating all the primitive shapes in the BRL-CAD model, then evaluating the Boolean formula for each region. The result of this is a facetted representation of each region. The tessellation tolerances are used to determine the coarseness of the tessellation of curved surfaces. Smaller tolerances result in more, smaller facets and a larger output file. The calculation tolerance is the minimum distance between any two vertices in a region. Any vertices closer than this are fused into a single vertex.</para>
-      <table xml:id="tbl_export_converters"><info><title>BRL-CAD export converters.</title></info>
+      <table xml:id="tbl_export_converters"><title>BRL-CAD export converters.</title>
 
 	<tgroup cols="2">
 	  <thead>
@@ -1021,7 +1021,7 @@
       <para>The Advanced Computer Aided Design (ACAD) format is the format for the in- house CAD package developed in the early 1980s by Lockheed Martin Tactical Aircraft Systems (then General Dynamics - Fort Worth) and distributed since 1995 by the Electromagnetic Code Consortium. The package was developed to improve the product design process by eliminating manual drawing boards and reducing design iteration cycle times. Notable aircraft programs that have used ACAD include the Joint Strike Fighter (F-35), the Raptor (F-22), the Advanced Technology Fighter, the National Aerospace Plane (X-30), and the Attack/Fighter-Experimental (A/F-X) (SURVICE Engineering Company, 2002).</para>
       <para>A notable characteristic of ACAD is the layers by which modeled parts are separated and managed (e.g., by subsystem). The package stores geometric data in a relational database that uses parent-child dependencies to enable automatic and rapid geometric modification. For example, changing a control spline of a fuselage will automatically regenerate any surface(s) built with that spline. Any geometry that is associated to the fuselage surface (i.e., plane/curve and surface intersections, fillets, etc.) will then regenerate.</para>
       <para>One of ACAD's strengths is its bidirectional IGES translator, which provides compatibility with other IGES-supported formats, including CADAM, CATIA, COMPUTERVISION, AutoCAD, and Pro/E.</para>
-      <table><info><title>ACAD or AutoCAD?</title></info>
+      <table><title>ACAD or AutoCAD?</title>
 
 	<tgroup cols="2">
 	  <tbody>
@@ -1033,7 +1033,7 @@
 	</tgroup>
       </table>
       <para>As its name implies, the <command>g-acad</command> utility converts a file in BRL-CAD format to a file in facetted ACAD format. The form of the command is as follows:</para>
-      <para><command>g-acad</command> [<option>options</option>] <option>-o <filename>output_file</filename> <filename>input.g</filename> object(s)</option></para>
+      <para><command>g-acad</command> [<option>options</option>] <option>-o <replaceable>output_file</replaceable> <replaceable>input.g</replaceable> object(s)</option></para>
       <para>The options for the g-acad command are as follows:</para>
       <itemizedlist>
 	<listitem>
@@ -1046,7 +1046,7 @@
 	  <para><option>-X lvl</option> - sets the NMG library debug flag (see <filename>nmg.h</filename> in the binary distribution for definitions of DEBUG_xxx).</para>
 	</listitem>
 	<listitem>
-	  <para><option>-e <filename>error_file</filename></option> - sends error messages to specified file (default is standard error [<filename>stderr</filename>]).</para>
+	  <para><option>-e <replaceable>error_file</replaceable></option> - sends error messages to specified file (default is standard error [<filename>stderr</filename>]).</para>
 	</listitem>
 	<listitem>
 	  <para><option>-v</option> - verbose; prints out progress information.</para>
@@ -1069,14 +1069,14 @@
     <section><info><title>Converting to AutoCAD DXF Format</title></info>
 
       <para>The g-dxf command converts BRL-CAD objects to the previously mentioned AutoCAD DXF format. The syntax for this command is as follows:</para>
-      <para><command>g-dxf</command> [<option>options</option>] <option><filename>input.g</filename> object(s</option>)</para>
+      <para><command>g-dxf</command> [<option>options</option>] <option><replaceable>input.g</replaceable> object(s</option>)</para>
       <para>The options for the g-dxf command are as follows:</para>
       <itemizedlist>
 	<listitem>
 	  <para><option>-i</option> - requests the output DXF file to be in inches (default is millimeters).</para>
 	</listitem>
 	<listitem>
-	  <para><option>-o <filename>output.dxf</filename></option> - specifies the file to receive the DXF output (default is stdout).</para>
+	  <para><option>-o <replaceable>output.dxf</replaceable></option> - specifies the file to receive the DXF output (default is stdout).</para>
 	</listitem>
 	<listitem>
 	  <para><option>-p</option> - requests that the output DXF file consist of POLYFACE MESH entities (the default is 3DFACE entities).</para>
@@ -1088,14 +1088,14 @@
     <section><info><title>Converting to EUCLID Format</title></info>
 
       <para>The <command>g-euclid</command> command converts BRL-CAD objects to a EUCLID ``decoded'' facetted format. Note that, as previously mentioned, this format is not native EUCLID format. The form of the command is as follows:</para>
-      <para><command>g-euclid</command> [<option>options</option>] <option><filename>input.g</filename> objects(s)</option></para>
+      <para><command>g-euclid</command> [<option>options</option>] <option><replaceable>input.g</replaceable> objects(s)</option></para>
       <para>The options for the <command>g-euclid</command> command are as follows:</para>
       <itemizedlist>
 	<listitem>
 	  <para><option>-u units</option> - sets the output units (the default is millimeters).</para>
 	</listitem>
 	<listitem>
-	  <para><option>-o <filename>output_file_name</filename></option> - sets the output file name (the default is <filename>stdout</filename>).</para>
+	  <para><option>-o <replaceable>output_file_name</replaceable></option> - sets the output file name (the default is <filename>stdout</filename>).</para>
 	</listitem>
       </itemizedlist>
       <para>For more information about the EUCLID file format and export possibilities, see the <orgname>MDTVISION</orgname> web site at <link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://support.mdtvision.com"><uri>http://support.mdtvision.com</uri></link> (MDTVISION, 2003).</para>
@@ -1103,11 +1103,11 @@
     <section><info><title>Converting to IGES Format</title></info>
 
       <para>The syntax for the BRL-CAD to IGES converter is as follows:</para>
-      <para><command>g-iges</command> [<option>options</option>] <option><filename>input.g</filename> object(s)</option></para>
+      <para><command>g-iges</command> [<option>options</option>] <option><replaceable>input.g</replaceable> object(s)</option></para>
       <para>The options for the g-iges  command are as follows:</para>
       <itemizedlist>
 	<listitem>
-	  <para><option>-o <filename>output_name</filename></option> - indicates the name of the resulting IGES file. If the m option is specified, then this is the name of a directory where resulting IGES files will be placed (the directory must already exist). (The default is <filename>stdout</filename>.)</para>
+	  <para><option>-o <replaceable>output_name</replaceable></option> - indicates the name of the resulting IGES file. If the m option is specified, then this is the name of a directory where resulting IGES files will be placed (the directory must already exist). (The default is <filename>stdout</filename>.)</para>
 	</listitem>
 	<listitem>
 	  <para><option>-f</option> - designates that the resulting IGES file will be entirely facetted BREP entities. The <option>-f</option> and <option>-t</option> options (the next option discussed) are mutually exclusive.</para>
@@ -1123,7 +1123,7 @@
 	</listitem>
       </itemizedlist>
       <para>With the <option>-t</option> and <option>-f</option> options, the converter will employ Boolean evaluation of each region. If neither option is specified, then a CSG IGES file will be produced. The command also accepts the previously mentioned <option>-v</option>, <option>-r</option>, <option>-a</option>, <option>-n</option>, <option>-x</option>, and <option>-X</option> options.</para>
-      <table><info><title>Package-Preferred IGES Converter Options</title></info>
+      <table><title>Package-Preferred IGES Converter Options</title>
 
 	<tgroup cols="2">
 	  <tbody>
@@ -1154,14 +1154,14 @@
     <section><info><title>Converting to STL Format</title></info>
 
       <para>The syntax for the BRL-CAD to STL converter is as follows:</para>
-      <para><command>g-stl</command> [<option>options</option>] <option><filename>input.g</filename> object(s)</option></para>
+      <para><command>g-stl</command> [<option>options</option>] <option><replaceable>input.g</replaceable> object(s)</option></para>
       <para>The options for the <command>g-stl</command> command are as follows:</para>
       <itemizedlist>
 	<listitem>
-	 <para><option>-o <filename>output_name</filename></option> - specifies the name of the file to receive the STL format output. This option is mutually exclusive with the m option. (The default is <filename>stdout</filename>.)</para>
+	 <para><option>-o <replaceable>output_name</replaceable></option> - specifies the name of the file to receive the STL format output. This option is mutually exclusive with the m option. (The default is <filename>stdout</filename>.)</para>
 	</listitem>
 	<listitem>
-	  <para><option>-m <filename>directory_name</filename></option> - specifies the name of an existing directory where output STL files will be placed. This option is mutually exclusive with the <option>-o</option> option. When this option is exercised, each region in the specified object(s) is output in a separate file written to the specified directory. The file names will be based on the BRL-CAD database path to the region, with ``/'' characters replaced by ``@'' and ``.'' characters replaced by ``_''.</para>
+	  <para><option>-m <replaceable>directory_name</replaceable></option> - specifies the name of an existing directory where output STL files will be placed. This option is mutually exclusive with the <option>-o</option> option. When this option is exercised, each region in the specified object(s) is output in a separate file written to the specified directory. The file names will be based on the BRL-CAD database path to the region, with ``/'' characters replaced by ``@'' and ``.'' characters replaced by ``_''.</para>
 	</listitem>
 	<listitem>
 	  <para><option>-b</option> - produces binary format STL files. The combination of this option and the <option>-o</option> option produces a binary STL file containing one solid object representing all the regions in the specified object(s). (The default output format is ASCII.)</para>
@@ -1180,17 +1180,17 @@
 
       <para>As discussed previously, the TANKILL format is another purely triangulated representation of solid objects.</para>
       <para>The syntax for the g-tankill command is as follows:</para>
-      <para><command>g-tankill</command> [<option>options</option>] <option><filename>input.g</filename> object(s)</option></para>
+      <para><command>g-tankill</command> [<option>options</option>] <option><replaceable>input.g</replaceable> object(s)</option></para>
       <para>The options for the <command>g-tankill</command> command are as follows:</para>
       <itemizedlist>
 	<listitem>
-	  <para><option>-i <filename>idents_file</filename></option> - specifies that the ident numbers in the output file should be assigned sequentially as BRL-CAD regions are encountered (rather than using the ident numbers assigned in the BRL-CAD file). A mapping of the assigned ident numbers and the BRL-CAD regions is written to the specified idents_file.</para>
+	  <para><option>-i <replaceable>idents_file</replaceable></option> - specifies that the ident numbers in the output file should be assigned sequentially as BRL-CAD regions are encountered (rather than using the ident numbers assigned in the BRL-CAD file). A mapping of the assigned ident numbers and the BRL-CAD regions is written to the specified idents_file.</para>
 	</listitem>
 	<listitem>
 	  <para><option>-s surroundings_code</option> - specifies the surroundings code, which is a code TANKILL uses to indicate the type of volume that surrounds an object (the default is 1000).</para>
 	</listitem>
 	<listitem>
-	  <para><option>-o <filename>output_name</filename></option> -  specifies the name of a file to receive the output (default it <filename>stdout</filename>).</para>
+	  <para><option>-o <replaceable>output_name</replaceable></option> -  specifies the name of a file to receive the output (default it <filename>stdout</filename>).</para>
 	</listitem>
       </itemizedlist>
       <para>The command also accepts the previously mentioned <option>-v</option>, <option>-r</option>, <option>-a</option>, <option>-n</option>, <option>-x</option>, and <option>-X</option> options.</para>
@@ -1200,7 +1200,7 @@
 
       <para>The Virtual Reality Modeling Language (VRML) began in 1994 at the first World Wide Web Conference. The format -which is maintained by the nonprofit, vendor-neutral Web3D Consortium- was designed to be a Web-interoperable standard for specifying multiparticipant 3-D graphical visualization tools. When a user selects a hyperlink to a VRML document from within a correctly configured WWW browser, a VRML viewer is launched to navigate through a given geometry (e.g., a model of a building). Future versions of VRML are planned to include more advanced features, including animations, motion physics, and real-time multiuser interaction (Web3D Consortium, 2003b).</para>
       <para>The g-vrml command converts BRL-CAD objects to the VRML 2.0 format. It takes the following form:</para>
-      <para><command>g-vrml</command> [<option>options</option>] <option><filename>input.g</filename> object(s)</option></para>
+      <para><command>g-vrml</command> [<option>options</option>] <option><replaceable>input.g</replaceable> object(s)</option></para>
       <para>The options for the command are as follows:</para>
       <itemizedlist>
 	<listitem>
@@ -1210,12 +1210,12 @@
 	  <para><option>-u units</option> - sets the desired output units (the default is millimeters).</para>
 	</listitem>
 	<listitem>
-	  <para><option>-o <filename>output_file_name</filename> - sets output file name (the default is <filename>stdout</filename>).</option></para>
+        <para><option>-o <replaceable>output_file_name</replaceable></option> - sets output file name (the default is <filename>stdout</filename>).</para>
 	</listitem>
       </itemizedlist>
       <para>The command also accepts the previously mentioned <option>-v</option>, <option>-r</option>, <option>-a</option>, <option>-n</option>, <option>-x</option>, and <option>-X</option> options.</para>
       <para>For more information on VRML, see the Web3D Consortium web site at <link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://www.web3d.org /fs_technicalinfo.htm"><uri>http://www.web3d.org /fs_technicalinfo.htm</uri></link> (Web3D Consortium, 2003b).</para>
-      <table><info><title>The Web3D Consortium</title></info>
+      <table><title>The Web3D Consortium</title>
 
 	<tgroup cols="2">
 	  <tbody>
@@ -1231,7 +1231,7 @@
 
       <para>The Wavefront OBJ format was developed in 1984 by <orgname>Wavefront Technologies</orgname> (now <orgname>Alias</orgname>, a company that merged with <orgname>Wavefront</orgname> under <orgname>SGI</orgname>). The format, which was intended for use with the Wavefront Advanced Visualizer, consists of lines, polygons, and smooth surfaces.</para>
       <para>This <command>g-wave</command> converter produces an OBJ file that consists entirely of polygons (triangles). The command takes the following form:</para>
-      <para><command>g-wave</command> [<option>options</option>] <option><filename>input.g</filename> object(s)</option></para>
+      <para><command>g-wave</command> [<option>options</option>] <option><replaceable>input.g</replaceable> object(s)</option></para>
       <para>The options for the command are as follows:</para>
       <itemizedlist>
 	<listitem>
@@ -1247,7 +1247,7 @@
 	  <para><option>-u</option> - includes vertexuse normals in the output.</para>
 	</listitem>
 	<listitem>
-	  <para><option>-o <filename>output.obj</filename></option> - specifies the output file name (default is <filename>stdout</filename>).</para>
+	  <para><option>-o <replaceable>output.obj</replaceable></option> - specifies the output file name (default is <filename>stdout</filename>).</para>
 	</listitem>
       </itemizedlist>
       <para>The command also accepts the previously mentioned <option>-v</option>, <option>-r</option>, <option>-a</option>, <option>-n</option>, <option>-x</option>, and <option>-X</option> options.</para>
@@ -1257,7 +1257,7 @@
 
       <para>The successor to the Web3D Consortium's VRML format, the Extensible 3D (X3D) format was designed to be a standard for interactive web- and broadcast-based 3-D content. Its intended uses include engineering and scientific visualization, multimedia presentations, entertainment and educational applications, web pages, and shared virtual worlds. It is also intended to serve as a universal interchange format for integrated 3-D graphics and multimedia. X3D possesses several improvements over VRML, including advanced APIs, additional data encoding formats, stricter conformance, and a componentized architecture that allows for a modular approach (Web3D Consortium, 2003a).</para>
       <para>The <command>g-x3d</command> command converts BRL-CAD objects to the X3D format. It takes the following form:</para>
-      <para><command>g-x3d</command> [<option>options</option>] <option><filename>input.g</filename> object(s)</option></para>
+      <para><command>g-x3d</command> [<option>options</option>] <option><replaceable>input.g</replaceable> object(s)</option></para>
       <para>The options for the command are as follows:</para>
       <itemizedlist>
 	<listitem>
@@ -1267,7 +1267,7 @@
 	  <para><option>-u units</option> - sets the desired output units (the default is millimeters).</para>
 	</listitem>
 	<listitem>
-	  <para><option>-o <filename>output_file_name</filename></option> - sets output file name (the default is <filename>stdout</filename>).</para>
+	  <para><option>-o <replaceable>output_file_name</replaceable></option> - sets output file name (the default is <filename>stdout</filename>).</para>
 	</listitem>
       </itemizedlist>
       <para>The command also accepts the previously mentioned <option>-v</option>, <option>-r</option>, <option>-a</option>, <option>-n</option>, <option>-x</option>, and <option>-X</option> options.</para>
