LinPlug MorphoX - Manual (Page 31)

This is the simplest stair, made of 2 levels which
makes a 2 step cycle. In MorphoX it is named 2-2.
This stair has 3 levels, the floor, one in the middle
and the highest. It takes 4 steps to complete one
cycle. Its named 3-4
This is the 4-6 as it consists of 4 levels and takes 6
steps.
The last example is the 5-8, you guess it: it has 5
levels and takes 8 steps, so at a speed of 1/16
th it
takes 8*1/16 th = half a note to complete.
The possible amount of levels goes way further up and finally produces a
more and more almost triangular-looking waveform; at the maximum setting
the waveform is hard to be perceived as steps anymore, depending on the
kind of modulation the Stair LFO is used for.
MorphoX user manual 1.1.0 page 31