Holding the [ALT] switch allows you to edit the Raster's alternate controls, which introduce a deep set of stereo techniques, from classic to entirely unique. Subtle adjustments to each parameter in the stereo field open up an even wider variety of delay and pitch based effects, while some controls simply filter the repeats, toggle trails on/off, or set delay divisions and modulation assignments, regardless of stereo configuration.
00:00 - Intro/Default Settings
00:42 - [ALT] Delay
01:25 - Series, Parallel, Ping Pong
02:29 - Tap Divisions
03:24 - [ALT] Blend
04:01 - [ALT] Feedback
04:56 - Modulation Assignment
06:03 - [ALT] Depth
06:31 - [ALT] Rate
07:13 - [ALT] Shift
09:18 - Independent L/R Shift (Web Editor)
09:54 - Trails
For an introduction to the Raster's primary controls:
https://www.youtube.com/watch?v=o8dNapbQ35k
Raster 2 Web Editor:
https://www.redpandalab.com/content/apps/raster-editor/index.html#/
The guitar, bass, and drum samples in this video were borrowed with permission from the song "Remote Viewer" from Into The Couch by Disheveled Cuss.