the same as typing t 4bca1ccc 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 4bca1ccc-bb26-48e0-9c53-c6d34d0adb3c e