endolith - 2014-03-18

I want to make diagrams for things like "hold button down for at least 3 seconds, LED comes on at 2 seconds, EEPROM is loaded here", etc. But when I try to increase the length of a tick to seconds, it looks like it's wrapping around? 1.0 s, 2.0 s, -1.3 s, -295 ms, 705.0 ms, 1.7 s, -1.6 s. etc. It should be possible to just change the units, instead, I think.