Reference

Host Sync

The 4 controls to the right of the delay slider controls allow you to sync the delay time to the tempo of the host application. (NB not all Audio Unit hosts provide tempo information.)

Host Tempo

This button activates the host tempo mode.

Beat Divisor & Triplet

The 'Beat Divisor' drop-down menu lets you set the units in which you want to control the loop length. '1/4' corresponds to quarter notes, '1/8' to eighth notes etc. The 'Triplet' button turns the selected value to triplets.

Beats

This is where you set the number of beats you want for the loop length. NB this can be a non-integer value e.g. if the beat divisor is '1/8' then setting 'Beats' to 1.5 will give you a dotted eighth note loop length.