FrankLIN has been given an Undo buffer, which is slightly different from the regular one. It does not always record the last action; instead, the buffer can be loaded by the user at any desired working step, and this memorises the data as well as the tool that is currently in use.
To load the Undo buffer, click on this icon. The buffer will be loaded automatically when FrankLIN is opened as well as when loading and saving control curve sets.
The contents of the buffer are recalled (which resets the control curve(s) in the working area to a previously stored state) with a click on the small tube at the bottom of the Undo icon. This acts as an Undo/Redo combination, meaning that the contents of the buffer is reconstructed in the graph and the conditions when triggering the action are loaded into the buffer. By selecting the icon repeatedly you can switch back and forth between the old and new states.
FrankLIN's Undo buffer is fairly intelligent and attempts to intercept any user errors. So it is not only possible to reconstruct the conditions before the Undo buffer was called, but also to return to the chaotic state reigning at the time that it was called (Redo). The buffer normally operates in the background, but can also be used actively:
To do this you just have to select the small camera in the Undo icon. The current status (control curve type) and all control curves will be loaded into the Undo buffer. This function can also be called with a [Shift]+[Alt]+[Undo] key combination.
This function can be triggered by clicking on the small collapsible tube in the Undo icon, and serves to restore exactly the stored state. This means that the control curve will be converted to a different type if necessary, the tool as well, and naturally the control curves will be replaced by those from the buffer.
At the same time, however, the conditions at the instant that the Redo was triggered are loaded into the Undo buffer. In other words, there is a swap between the editing conditions and the Undo buffer conditions.
This function can also be called with the [Undo] key.
