Here are a couple of things from Keith about the attack control.
That statement only applies to the dynacomp/ross based compressors. I believe the misuses of the terms stemmed from the Ibanez CP-x's that were basically clones with a "release" mod, but they labelled it "attack". Since then amost all the mass produced and boutique clones that copied this mod, continue to label it as "attack". About the only time you will see someone correctly label the mod as release is if they've also got a proper attack mod as well and the proper attack mod is usually a switch that changes out a capacitor value.
Nothing has changed with the "attack" mod between the 3 knob and 5 knob compressors. And the "attack" mod really controls the release. But through the years, all the dynacomp copies (and even the custom shop mxr compressor) have labelled this parameter as attack. So I figured it best to leave it named something that people are familiar with.
Also, here is the control description from the build intructions:
LEVEL: Controls overall volume
RATIO: Controls the mix of dry & compressed signal. Clockwise = more compressed
signal. Counter Clockwise = more dry signal
SUSTAIN: Controls the amount of sustain and sensitivity of the compression
ATTACK: Controls how quickly the compressor reacts to pick attack
TONE: Clockwise = less bass. This is a bass cut tone knob used to add ´jangle´. So full
turn counter clockwise would be the closest to your original signal. Full turn Counter
Clockwise will not add bass. Nor does turning it Clockwise add treble