Fixed time in Assist Mode

Hello,
Can someone point me in the right direction in the user manual version 3.1 that clearly explains how the different timings work in Assist mode? (Page number)
Keen to learn what they mean and how they work, or is there somewhere in this forum?
Thanks

The following Timing options are available:

  • Normal : Item starts when the preceding item has finished (or reaches Start Next or Fade Out marker, whatever comes first).

  • Hard fixed time : Item is started at exactly the specified time.

  • Soft fixed time : Item is started at or after the specified time, when the current item has finished.

  • Backtimed : To be used directly before a hard or soft item; will propagate the fixed time further up the list, so that this item finishes at the fixed time. You can schedule multiple backtimed items in a row to build a “backtiming chain”.

  • Excluded from backtiming : Item is ignored by the backtiming algorithm.

You will find the whole text here: tutorials:mairlistdb:music-scheduling [mAirList Wiki] at the section “Timing”, including further explanations.