Index: en_US.ISO8859-1/books/porters-handbook/porting-samplem/chapter.xml
===================================================================
--- en_US.ISO8859-1/books/porters-handbook/porting-samplem/chapter.xml
+++ en_US.ISO8859-1/books/porters-handbook/porting-samplem/chapter.xml
@@ -49,11 +49,14 @@
 [section for distributed patches -- can be empty]
 PATCH_SITES=	ftp://ftp.sra.co.jp/pub/X11/japanese/
 PATCHFILES=	xdvi-18.patch1.gz xdvi-18.patch2.gz
+[If the distributed patches were not made relative to ${WRKSRC},
+ this may need to be tweaked]
+PATCH_DIST_STRIP=	-p1
 
 [maintainer; *mandatory*!  This is the person who is volunteering to
  handle port updates, build breakages, and to whom a users can direct
  questions and bug reports.  To keep the quality of the Ports Collection
- as high as possible, we no longer accept new ports that are assigned to
+ as high as possible, we do not accept new ports that are assigned to
  "ports@FreeBSD.org".]
 MAINTAINER=	asami@FreeBSD.org
 COMMENT=	DVI Previewer for the X Window System
@@ -65,23 +68,34 @@
 [dependencies -- can be empty]
 RUN_DEPENDS=	gs:print/ghostscript
 
-[this section is for other standard bsd.port.mk variables that do not
+[If it requires GNU make, not /usr/bin/make, to build...]
+USES= gmake
+[If it is an X application and requires "xmkmf -a" to be run...]
+USES= imake
+[If the source is obtained from github, remove MASTER_SITE* and...]
+USE_GITHUB=	yes
+GH_ACCOUNT=	example
+
+[this section is for other standard bsd.port.mk variables that do not]
  belong to any of the above]
 [If it asks questions during configure, build, install...]
 IS_INTERACTIVE=	yes
 [If it extracts to a directory other than ${DISTNAME}...]
 WRKSRC=		${WRKDIR}/xdvi-new
-[If the distributed patches were not made relative to ${WRKSRC},
- this may need to be tweaked]
-PATCH_DIST_STRIP=	-p1
 [If it requires a "configure" script generated by GNU autoconf to be run]
 GNU_CONFIGURE=	yes
-[If it requires GNU make, not /usr/bin/make, to build...]
-USES= gmake
-[If it is an X application and requires "xmkmf -a" to be run...]
-USES= imake
 [et cetera.]
 
+[If it requires options, this section is for options]
+OPTIONS_DEFINE=	DOCS EXAMPLES FOO
+OPTIONS_DEFAULT=	FOO
+[If options will change the files in plist]
+OPTIONS_SUB=yes
+
+FOO_DESC=		Enable foo support
+
+FOO_CONFIGURE_ENABLE=	foo
+
 [non-standard variables to be used in the rules below]
 MY_FAVORITE_RESPONSE=	"yeah, right"
 
@@ -472,6 +486,20 @@
 	always put the
 	<varname>GH_<replaceable>*</replaceable></varname> variables
 	right after it.</para>
+    </sect2>
+
+    <sect2 xml:id="porting-samplem-variables">
+      <title>Standard <filename>bsd.port.mk</filename> Variables</title>
+
+      <para>This section block is for variables that can be defined in
+        <filename>bsd.port.mk</filename> that do not belong in any
+        of the previous section blocks.</para>
+
+      <para>Order is not important, however try to keep similar variables together.
+        For example uid and gid variables <varname>USERS</varname> and <varname>GROUPS</varname>.
+        Configuration variables <varname>CONFIGURE_</varname><replaceable>*</replaceable> and
+        <replaceable>*</replaceable><varname>_CONFIGURE</varname>. List of files, and directories
+        <varname>PORTDOCS</varname>, <varname>PORTEXAMPLES</varname> and <varname>PORTDATA</varname>.</para>
     </sect2>
 
     <sect2 xml:id="porting-samplem-options">