Undo and Redo

There are two types of Undo and Redo, depending strictly on what it is you are trying to do. In the normal usage of Undo - Redo when you are working with text in the main window, you can use Undo - Redo normally by going to Edit > Undo or Edit > Redo, although using Control - Z to Undo and Control - Y is usually the easiest. (Note this can vary between languages!) When you are doing a Search - Replace option, Undo - Redo will apply the operation only once. If working with a large text, attempting to Undo - Redo multiple times could easily bog down the computer, and consume excess memory. That said, future versions of Tachufind will likely look in to a way of determining how much memory is available, the length of the document, and improve capability.