Reference Guide

375

Undo, redo, and the undo history

Arranging and editing

Figure 89. 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.

The History list is updated every time you make a change to a project. For example, if you insert a

new note into a project using the Piano Roll view, that action is added to the History list. This entry

remains on the list—even if you undo the change—so that you can redo the change later on. If you

delete the note, this change is added to the History list.

You can click the Clear button in the Undo History dialog box to erase the undo history for the

current project and free up some memory. If SONAR is low on memory, it may offer to erase the

History list.

To revert to an earlier version of a project, highlight the entry in the History list that represents the

point to which you’d like to return, and click OK. SONAR performs the necessary undo or redo

actions to take you to that point. Once you edit the project (for example, by inserting a note), the

History list is truncated at that point. Then, as you do further work, the History list grows again. Any

events occurring before the event you highlighted remain on the list.

By default, SONAR keeps a history of up to 128 editing actions for each open project. Once that limit

is reached, each new action pushes out the oldest item from the History list. You can raise or lower

that number in the Undo History dialog box.