the same as typing t 45f4bef0 modify project:… due:… …. an empty box clears that field.
this is a demo. the data is invented, it is shared with everyone else looking, and it is wiped every night. don't put anything real in it. what is this?
$ tracker 45f4bef0-3525-4427-8410-dce27a8b5f22 e