the same as typing t caf8d0df 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 caf8d0df-1d67-49c5-9ac8-76ecef8b4a66 e