diff --git a/runtime/syntax/dtd.vim b/runtime/syntax/dtd.vim
index 76778ba..001dbbd 100644
--- a/runtime/syntax/dtd.vim
+++ b/runtime/syntax/dtd.vim
@@ -13,17 +13,11 @@
 " TODO:
 "   - improve synchronizing.
 
-if version < 600
-    syntax clear
-    let __dtd_cpo_save__ = &cpo
-    set cpo&
-else
-    if exists("b:current_syntax")
-	finish
-    endif
-    let s:dtd_cpo_save = &cpo
-    set cpo&vim
+if exists("b:current_syntax")
+    finish
 endif
+let s:dtd_cpo_save = &cpo
+set cpo&vim
 
 if !exists("dtd_ignore_case")
     " I prefer having the case takes into consideration.
@@ -168,13 +162,8 @@
     delcommand HiLink
 endif
 
-if version < 600
-    let &cpo = __dtd_cpo_save__
-    unlet __dtd_cpo_save__
-else
-    let &cpo = s:dtd_cpo_save
-    unlet s:dtd_cpo_save
-endif
+let &cpo = s:dtd_cpo_save
+unlet s:dtd_cpo_save
 
 let b:current_syntax = "dtd"
 
diff --git a/runtime/syntax/help.vim b/runtime/syntax/help.vim
index ddaad89..8d85d02 100644
--- a/runtime/syntax/help.vim
+++ b/runtime/syntax/help.vim
@@ -1,7 +1,7 @@
 " Vim syntax file
 " Language:	Vim help file
 " Maintainer:	Bram Moolenaar (Bram@vim.org)
-" Last Change:	2012 Apr 25
+" Last Change:	2012 May 18
 
 " Quit when a (custom) syntax file was already loaded
 if exists("b:current_syntax")
@@ -25,10 +25,10 @@
   syn match helpHyperTextEntry	"\*[#-)!+-~]\+\*$" contains=helpStar
 endif
 if has("conceal")
-  syn match helpBar		contained "|" conceal
+  syn match helpBar		contained "[|`]" conceal
   syn match helpStar		contained "\*" conceal
 else
-  syn match helpBar		contained "|"
+  syn match helpBar		contained "[|`]"
   syn match helpStar		contained "\*"
 endif
 syn match helpNormal		"|.*====*|"
@@ -38,7 +38,7 @@
 syn match helpVim		"VIM REFERENCE.*"
 syn match helpOption		"'[a-z]\{2,\}'"
 syn match helpOption		"'t_..'"
-syn match helpCommand		"`[^` ]*`"hs=s+1,he=e-1
+syn match helpCommand		"`[^` ]*`"hs=s+1,he=e-1 contains=helpBar
 syn match helpHeader		"\s*\zs.\{-}\ze\s\=\~$" nextgroup=helpIgnore
 syn match helpGraphic		".* \ze`$" nextgroup=helpIgnore
 if has("conceal")