diff --git a/doc/grammar.txt b/doc/grammar.txt
index f7c79d32..99f06dc0 100644
--- a/doc/grammar.txt
+++ b/doc/grammar.txt
@@ -20,6 +20,9 @@ The CLI shall have a well-defined and unambiguous grammar.
     timew define tag <tag> start <date>
     timew define tag <tag> end <date>
 
+    timew export ...
+    timew import ...
+
 
 CLI Grammar
 -----------