Mention some extra knobs in the config template

config/blah.config.template

@@ -47,6 +47,11 @@ blah_shared_directories=/
 #blah_wn_inputsandbox=/tmp
 #blah_wn_outputsandbox=/tmp
 
+#A directory to save each generated submit file in, for debugging.
+#Warning: This creates a new file for each job; you will have to
+#clean up the files yourself.
+#blah_debug_save_submit_info=/tmp
+
 #The following configuration attributes allow for additional
 #submit command attributes to be set in the local shell callout
 #for batch system customizations.
@@ -76,6 +81,10 @@ blah_require_proxy_on_submit=
 #disable proxy user copy (default no)
 #blah_disable_proxy_user_copy=yes
 
+#a wrapper around the main executable -- the string will be prepended
+#to the executable call
+#blah_job_wrapper=
+
 ##PBS common variables
 
 #Path where PBS executables are located