History Tool Window
History Tool Window displays the operation history of the current document The current document is a document whose editor window is currently active.
Operations are displayed in a list in ascending order: older operations are at the top and newer operations are at the bottom. Similar operations (operations of the same type) can be grouped, which is a default behavior. The History » Group Same Operations switch is used to turn grouping on or off.
Each operation is displayed with an image and operation name. Operation parameters are also displayed.
Branches are marked with a special overlay icon, as well as groups. To switch to a given operation, click on it in a list. All document windows are immediately updated to reflect changes. The selected operation becomes a current operation. All operations, issued after the current operation in the same branch become phantom operations and are displayed in gray color. They currently do not affect the document's state.