the same as typing t 6f0407d2 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 6f0407d2-84a2-4344-ac88-8942f2191cc5 e