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Method to Return to Previously Entered Commands

IP.com Disclosure Number: IPCOM000039409D
Original Publication Date: 1987-Jun-01
Included in the Prior Art Database: 2005-Feb-01

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Related People

Bennett, JL Berry, RE Gladney, HM McInroy, JW [+details]


A method is described to permit an operator to reaccess or revisit a sequence of commands that are stored in a "stack register" without destroying the data that was entered. In many programs, commands that are entered by the operator are stored in a stack and provision is made for the operator to step back through the sequence to a point where new data is entered. The function is sometimes referred to as "undo" which is helpful, for example, in a word processing program where a block of text has been accidentally erased. It is also used to "back out" of a sequence of keystrokes representing selections in a hierarchy-type menu system. In these situations, the data that was entered is erased. The new function that is useful is similar to "undo" but does not erase the data that is associated with the command.