Require the verbatim package (similar to the LaTeX version).
diff --git a/Doc/perl/manual.perl b/Doc/perl/manual.perl
index e80f8e4..b3afa6e 100644
--- a/Doc/perl/manual.perl
+++ b/Doc/perl/manual.perl
@@ -8,7 +8,8 @@
 
 package main;
 
-&do_require_package("report");
-&do_require_package("python");
+do_require_package("report");
+do_require_package("verbatim");
+do_require_package("python");
 
 1;				# sheesh....