the same as typing t a3c6177e 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 a3c6177e-e746-479f-a9f6-047c5ab0d1a9 e