2.7. Dialogrutan Ångringshistorik
| 2. Dialogrutor relaterade till bildstruktur |

### 2.7. Dialogrutan Ångringshistorik

Figur 15.25. Dialogrutan Ångringshistorik

This dialog shows you a list of the actions you have most recently performed on an image, with a small sketch that attempts to illustrate the changes produced by each. You can revert the image to any point in its Undo History simply by clicking on the right entry in the list. For more information on GIMP's Undo mechanism and how it works, see the section on Undoing.

#### 2.7.1. Activating the dialog

The ”Undo History” dialog is a dockable dialog; see the section Avsnitt 2.3, ”Dialoger och dockning” for help on manipulating it.

You can access it:

- from the image menu: Windows → Dockable Dialogs → Undo History.

- from the Tab menu in any dockable dialog by clicking on and selecting Add Tab → Undo History.

#### 2.7.2. Använda dialogrutan Ångringshistorik

The most basic thing you can do is to select a point in the Undo History by clicking on it in the list. You can go back and forth between states in this way as much as you please, without losing any information or consuming any resources. In most cases, the changes are very fast.

| Tips
Ctrl+F opens a search field. See Visa som lista; Visa som rutnät

At the bottom of the dialog are three buttons:

Ångra

  This button has the same effect as choosing Edit → Undo from the menu, or pressing Ctrl+Z; it reverts the image to the next state back in the undo history.

Gör om

  This button has the same effect as choosing Edit → Redo from the menu, or pressing Ctrl+Y; it advances the image to the next state forward in the Undo History.

Töm ångringshistorik

  This button removes all contents from the undo history except the current state. If you press it, you are asked to confirm that you really want to do this. The only reason for doing it would be if you are very constrained for memory.

  | Notera
  In a tab, this dialog is represented by

  | Notera
  You can set the number of undo levels in System Resources.

2.6. Dialogrutan Navigering |  | 3. Dialogrutor relaterade till bildinnehåll

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