Make a little DTD for the template format I've defined so far, so that

if we work futher on it, we have a good starting point. Make the
existing templates validate with the DTD.

utils/nsgen/lan.xml

-<?xml version="1.0" encoding="ISO-8859-1"?>
+<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>
+<!DOCTYPE nstemplate SYSTEM "nstemplate.dtd">
 <!--
     XML NS template file for making a simple
 -->

utils/nsgen/nstemplate.dtd

+<!--
+
+EMULAB-COPYRIGHT
+Copyright (c) 2006 University of Utah and the Flux Group.
+All rights reserved.
+
+A DTD for Emulab NS template files
+-->
+
+<!ELEMENT nstemplate (variable*,nstext)>
+<!-- Attributes under conideration for nstemplate: name, author -->
+
+<!ELEMENT variable EMPTY>
+<!ATTLIST variable name CDATA #REQUIRED
+                   default CDATA #REQUIRED
+                   descr CDATA #IMPLIED>
+
+<!ELEMENT nstext (section+)>
+
+<!ELEMENT section (#PCDATA)>
+<!ATTLIST section depends_on CDATA #IMPLIED
+                  action (skip|comment) "skip">
+

utils/nsgen/plabdevbox.xml

-<?xml version="1.0" encoding="ISO-8859-1"?>
+<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>
+<!DOCTYPE nstemplate SYSTEM "nstemplate.dtd">
 <!--
     XML NS template for making a single-node PlanetLab DevBox experiment
 -->

utils/nsgen/planetlab.xml

-<?xml version="1.0" encoding="ISO-8859-1"?>
+<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>
+<!DOCTYPE nstemplate SYSTEM "nstemplate.dtd">
 <!--
     XML NS template based on planetlab.ns - For making PlanetLab experiments
 -->
@@ -6,7 +7,7 @@
     <variable name="Count" default="10" />
     <variable name="ResUsage" default="3" />
     <variable name="HWType" default="pcplab" />
-    <variable name="FailOK" />
+    <variable name="FailOK" default="" />
     <variable name="Tarballs" default="/somedir /proj/yourproj/tarfiles/yourtarball.tar.gz" />
     <variable name="RPMs" default="/proj/yourproj/rpms/yourrpm.rpm" />
     <variable name="Startup" default="/somepath/yourstartupcmd" />