Hi Roger, Right, like in most editing applications each opened file has its own undo/redo stack of changes independent of the other opened files. In the Preferences->"Editor" page there is an undo history size setting which limits the undo history for each opened file to a maximum of 200 changes. This is to conserve memory. The undo history for an opened file is lost if the file is closed and re-opened. Regards, Radu Radu Coravu Oxygen XML Editor On 5/11/22 17:42, Roger L Costello wrote:

I have several tabs open. One tab contains a text file. I cut some text. Then I did another cut. And a few more.

Then I went to the other tabs and did a bunch of work on the data in them - cutting, pasting, moving things around. I did this for a couple hours.

Then I went back to the first tab. I was curious to see if the cut text was still hanging around, so I did Ctrl-Z. Wow! The last cut text reappeared. I did another Ctrl-Z and the second-to-last cut text reappeared. Another Ctrl-Z and the third-to-last cut text reappeared. That is impressive!

Great work Oxygen team.

/Roger _______________________________________________ oXygen-user mailing list oXygen-user@oxygenxml.com https://www.oxygenxml.com/mailman/listinfo/oxygen-user