Purge undo's plugin?
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 Does such an animal exist? -- I know in Photoshop I like to occasionally purge the undo history to keep the program responsive, and I thought such a tool would be handy in Sketchup as well. A "save and purge" command or button would be ideal. Best, 
 Jason.
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 Plugins have no access to the Undo history. You have performance issues? 
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 I've had Sketchup die a few times when performing sequences of filtering activities related to high-poly models -- no bug report, just died completely... It's not a big deal because after restart I could proceed, and if I saved after each action I only lost a bit of time -- but if I could have purged those actions from memory I think I could avoid the crashes. I suppose this goes on the feature suggestion forum... thanks for the heads-up. Best, 
 Jason.
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 Sounds more like a bug report. There's a link the the Bug Report section - a sticky. Follow that and submit your bug to Google. What you propose as a feature request is a workaround for a bug - it'd be better to have the bug fixed. 
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