How to undo in spreadsheet calculator sc?

Question

spreadsheet calculator sc is a very old console-based program. It does what the name says. I cannot find how to undo an operation in its man page. I currently use it together with RCS, ie. manually create versions in RCS before big changes, and rotate back to a version if needed. I am wondering if there is a better way to do it. Thanks.

Answer 1

The Debian package knows of Undo (keybinding u, see also this manpage), so maybe you can grab their source package and compile it on your system.