[编程交流] 自动保存器。LSP

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;;;    AutoSaveReactor.lsp v1.0
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;;;    Copyright© 05.06.10
;;;    Alan J. Thompson (alanjt)
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;;;    Contact: alanjt @ TheSwamp.org, CADTutor.net
;;;
;;;    Permission to use, copy, modify, and distribute this software
;;;    for any purpose and without fee is hereby granted, provided
;;;    that the above copyright notice appears in all copies and
;;;    that both that copyright notice and the limited warranty and
;;;    restricted rights notice below appear in all supporting
;;;    documentation.
;;;
;;;    The following program(s) are provided "as is" and with all faults.
;;;    Alan J. Thompson DOES NOT warrant that the operation of the program(s)
;;;    will be uninterrupted and/or error free.
;;;
;;;    Allows user to specify a number of minutes for an autosave time and
;;;    everytime a command is executed, if the duration between time from the
;;;    last time the drawing was saved (with AutoSave) is greater or equal to
;;;    the designated AutoSave minutes, the drawing will be saved.
;;;    Everything works transparently.
;;;
[color=Red];;;    Turn on:  AutoSave
[/color];;;
;;;    Revision History:
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