How to restore deleted lines in the ST-object? How to revert to the original code of changed lines?

There are several possibilities to undo the changes in an ST-object and to get the original code. Here the most common methods:

Method	Details under:
Undo the changes in the ST-editor. Example: menu Edit – command Undo	Undoing or redoing changes in ST-editor
Discard all changes since the content has been saved. Example: menu File – command Revert	Undoing or redoing changes in ST-editor
Replace the content with a state from the local history. context menu of ST-object within the project explorer – command Replace With and Local History...	Replacing a resource with local history
Use of the following commands that is provided due the activated quick difference: Restore Deleted Line and Revert Line Restriction: This method is only recommended by Neuron, if the deleted/changed lines are located "in the middle" of the ST-object. If the first/last line of the ST-object has been deleted/changed, this method does not grant that those lines are restored correctly. Rather use one of the other methods to get the original first/last line.	Show Quick Diff