diff --git a/plugin/NERD_tree.vim b/plugin/NERD_tree.vim
index ad8e323..fc1513b 100644
--- a/plugin/NERD_tree.vim
+++ b/plugin/NERD_tree.vim
@@ -1865,6 +1865,11 @@ function! s:DumpHelp()
         let @h=@h."\" ". g:NERDTreeMapOpenExpl.": Open netrw for selected\n"
         let @h=@h."\"    node\n"
 
+        let @h=@h."\"\n\" ----------------------------\n"
+        let @h=@h."\" Bookmark table mappings~\n"
+        let @h=@h."\" double-click,\n"
+        let @h=@h."\" ". g:NERDTreeMapActivateNode .": activate bookmark\n"
+
         let @h=@h."\"\n\" ----------------------------\n"
         let @h=@h."\" Tree navigation mappings~\n"
         let @h=@h."\" ". g:NERDTreeMapJumpRoot .": go to root\n"