Reference Guide

390 Arranging and editing

Undo, redo, and the undo history

SONAR provides very powerful Undo and Redo commands that let you move forward or backward

through any portion of an editing session. Every project has its own independent undo history. This

means you can return to any open project and use the Undo and Redo commands, even if you’ve

spent the last hour working on a different project. The undo history of a project is lost when you close

the project.

Remembering everything that is necessary to undo the changes you have made can use a lot of

memory. If a change you are about to make requires too much memory and cannot be undone, you

will be advised that the operation is too big to undo later and asked if you want to go ahead anyway.

If you do choose to perform the operation, you will not be able to undo it. Therefore, you may want to

save your project first.The Edit > History command displays a complete history of the commands

and actions you can undo for the current project. The Undo History dialog box looks like this:

Figure 95. The Undo History dialog

A. Most recent change B. Click to clear the undo history C. Adjust the number of steps you can undo

The History command is grayed out until you make a change to the current project that can be

undone.