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-rw-r--r--README.md5
1 files changed, 5 insertions, 0 deletions
diff --git a/README.md b/README.md
index 50c3291..5a1f77e 100644
--- a/README.md
+++ b/README.md
@@ -183,9 +183,14 @@ Default: `n`.
 	                    | &          -- check if all bits of <octal> set
 	                    | |          -- check if any bit of <octal> set
 	                    ) <octal>
+	             | mode = "<chmod>"  -- check if symbolic mode is satisfied
 	
 	<octal> ::= [0-7]+
 
+	<chmod> ::= <clause> (, <clause>)+
+
+	<clause> ::= [guoa]* [+-=] [rwxXstugo]*  -- see chmod(1)
+
 ## EWONTFIX
 
 The following features won't be implemented: