HP Forum Archive 13

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HP 28C undo Message #1 Posted by Ted Hill on 26 June 2003, 5:03 p.m. I have an HP 28C. When I press the "undo", I get a message that says "UNDO DISABLED" I don't see how to enable this. The manual describes how to use the UNDO, but doesn't say anything about how to enable/disable it.

Re: HP 28C undo Message #2 Posted by Ernie Malaga on 26 June 2003, 5:11 p.m., in response to message #1 by Ted Hill Ted: Press the red shift key, then [MODE] (it's right next to the red key). Then press [NEXT]. You'll see the menu change. The fifth of the top keys is labeled +UND. If you press it, UNDO will be activated. -Ernie

Re: HP 28C undo Message #3 Posted by Ted Hill on 26 June 2003, 5:21 p.m., in response to message #2 by Ernie Malaga Thank you so much. Ted Hill

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