diff --git a/doc/NERD_tree.txt b/doc/NERD_tree.txt
index 3930d8f..2458d11 100644
--- a/doc/NERD_tree.txt
+++ b/doc/NERD_tree.txt
@@ -1017,9 +1017,9 @@ Default: 1.
 
 When opening dir nodes, this option tells NERDTree to recursively open dirs
 that have only one child which is also a dir. NERDTree will stop when it finds
-a dir that contains anything but another single dir. Set this option on also 
-cause NERDTree close parent dir intelligent. This option may be useful for Java 
-projects. Use one of the follow lines to set this option: >
+a dir that contains anything but another single dir. This option also causes
+the |NERDTree-x| mapping to close dirs in the same manner. This option may be
+useful for Java projects. Use one of the follow lines to set this option: >
     let NERDTreeCascadeOpenSingleChildDir=0
     let NERDTreeCascadeOpenSingleChildDir=1
 <