ISF

Runs a user-loaded ISF (Interactive Shader Format) shader. Load .fs... opens a file dialog filtered to .fs files; the shader’s own declared inputs determine what parameters appear, not a fixed list this module owns.

Parameter	Control	Notes
Shader	file picker (Load .fs...)
Blend	Selector	Add, Multiply, Screen, Difference, XOR, Replace, or Phoenix into the chain.
Mix	Trough	Wet/dry of the shader’s result.
Shader Inputs	varies	Generated from the loaded shader’s own metadata; shape and count vary shader to shader.

An ISF shader is a separate mechanism from the fixed 41-type Insert FX catalog: an ISF module also carries its own Insert FX chain, stacked after the shader’s own result, not as a 42nd catalog entry. See Insert FX Chains.

Related: AUX Sends and Buses.