diff --git a/docs/command-line.md b/docs/command-line.md
index d204da0e..742d84b6 100644
--- a/docs/command-line.md
+++ b/docs/command-line.md
@@ -99,6 +99,7 @@ exclude:notThis         Matches all tests except, 'notThis'
 ~*private*              Matches all tests except those that contain 'private'
 a* ~ab* abc             Matches all tests that start with 'a', except those that
                         start with 'ab', except 'abc', which is included
+-# [#somefile]          Matches all tests from the file 'somefile.cpp'
 </pre>
 
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