ref(1) on Linux
The text 93c840d4ba43, as Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny), Debian 4.0 (Etch) shipped it. The page shows this text now.
Display a C function header
Flags it lists
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-a -
-c -
-d -
-h -
-s -
-t -
-v