This page describes the software application "multiknobs", and one type of multiknob called "bumps". In particular, our implementation of multiknobs is based on the XAL "knobs" application.
Documentation
Requirements for Multiknobs and Bumps, KnobsRequirements.pdf in Sharepoint
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The production LCLS XAL lcls.xdxf model $PHYSICS_TOP/config/model/lcls.xdxfin CVS
XAL Multiknobs and Bumps Help