My 0.5 cents… To avoid issues with understanding old projects, I use remarks (REM) in OT’s arranger. It is very useful i.e. to note crossfaider movement directions (A → B) and so on. While playing live you see these remarks several rows before they becomes active so you have time to be prepared for some actions you have to perform. It helps to be more relaxed during performance. Also good idea to make remarks more visible by using additional rows, i.e.:
006 | A07 000 16
007 | REM: ++++++++++++++++++
008 | REM: Chorus: A → B
009 | REM: ++++++++++++++++++
010 | A08 000 32
Another useful feature in arranger is possibility to select specific row for playback during performance if you find that audience like it and you decide to play it again.