Browse Saved Changes
Each time you save a project, all changes made to it are added to the current project's change file (<projectname>.pvr.ch or <econmodelname>.eco.ch - see Back-Up and Recovery Files). You can use this window to review the whole modeling history of the current project, or to select and separately save a subset. The Browse Saved Changes window works similarly to other change windows; see Change Browsers for a full explanation.