It's in the description, but in the description it should probably be called out as:

-e file

p.s. I'm not sure of the version, but I looked at a variety of sudo man pages, and they all have this issue.



Existing synopsis:

     sudo -h | -K | -k | -V
     sudo -v [-AknS] [-g group] [-h host] [-p prompt] [-u user]
     sudo -l [-AknS] [-g group] [-h host] [-p prompt] [-U user] [-u user] [command]
     sudo [-AbEHnPS] [-C num] [-g group] [-h host] [-p prompt] [-r role] [-t type] [-T timeout] [-u user] [VAR=value] [-i | -s] [command]
     sudoedit [-AknS] [-C num] [-g group] [-h host] [-p prompt] [-T timeout] [-u user] file ...