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You can save and reload knobs . The knobs are organized by Groups. If the All group is selected, you will see the knobs in all groups.using the File->Save and File->Open or File->Open Recent.

Note that a .knobs file can contain more than one knob! It contains all the "knobs" that were in the application when you saved.

The knobs files are in:

$PHYSICS_DATA/data/Knobs

Problems and Issues

1. Knobs app can't set non-EPICS devices (eg correctors), so;
   1. In "drilldown" mode it offers you devices to set that it can't in fact set (eg having selected BX02 TO QM15, you select Y corrector YC21303 (which is in fact an SLC CS corrector), select FieldSet (which you shouldn't have been able to do) and then it can't connect.
      WORK AROUND: Be conscious of what's SLC and what EPICS. See resources 0,1.
   2. It makes bumps using correctors it can't set!
      Eg: Select sequence indexes 2,3,4,5. Make Vertical design offset knobs. The first knob created is BPM21301. This contains 3 correctors, all SLC! Eg YXC21303 - YCOR:LI21:303. So, knob can't be implemented. This problem seems particularly acute for Vertical bumps! Are more of our horizontal correctors EPICS?
      NO work around. *Will have to fix so that that elements which are not settable="true" in the xdxf file, are not included.
2. Knobs->"Proprotional Coefficients" spelt wrongly.
3. Knobs Editor uses SNS type names, which themselves use >1 name eg hcorr == dch == horrzcorr => X correctors.

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