vimsynth/modules/s-h
modules/modulators/S&H
Sample and hold. Freezes whatever is at in on each trigger and holds it. NOISE → S&H → QUANT is *the* random-melody patch.

S&H to get this card.Down the left edge of the card, top to bottom.
Down the right edge, in the same order.
Left to right across the face — the dials in the picture.
The full reference — every parameter curve, the patching notes and the worked examples — lives in the manual: docs.vimsynth.com/modules/s-h. In the app itself, :help S&H opens the same page without leaving the rack.