I have no undo button and I must scream

[ThornHawthorne]

I have a windows 10 tablet.

WITHOUT SPENDING MONEY ON HARDWARE, how do I add the shortcut undo with either the pen or my fingers? Having to open a very tiny menu at the edge of the screen and wait several seconds for it to load is exponentially increasing the amount of time I spend drawing and I need to complete literal thousands of drawings.

Fresco will not work. It cannot open large files.

[D Fosse]

What happened to Ctrl+Z ? If that doesn't work, you have some other application on your system that hijacked it for some other purposes. Ctrl+Z is fairly universal in Windows itself and Windows applications.

[ThornHawthorne]

Without a keyboard?!

[D Fosse]

Is there no way to map it to the pen buttons? These basic shortcuts are hard wired in Windows and are a part of the operating system.

[ThornHawthorne]

Unfortunately, there is only one button and it is right click. Even if it could be mapped, I need to be able to right click things.

[Stephen_A_Marsh]

Some apps have an icon for undo/redo in the toolbar. Photoshop doesn't. You would need an action in button mode or a third party legacy CEP extension panel or a new UXP panel to have these permanently visible and available to the pen.

[AlanGilbertson]

Perhaps this page will help. It covers the touchscreen gestures for Photoshop on Windows, and includes the three-finger left swipe, which is Undo.

[Stephen_A_Marsh]

Great suggestion @AlanGilbertson