the same as typing t 8c9e0b0d 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 8c9e0b0d-96ec-452c-8802-6f7db5f891d9 e