MEDINA-MORA, R., AND FELLER, P. An incremental programming environment. IEEE Trans. Softw. Eng., SE-7 (Sept. 1981), 472-481.  Home/Search   Document Not in Database   Summary   Related Articles

....may be desired. Our concern here is with general recovery facilities that are both automatic and convenient. There is increasing interest in such facilities. The INTERLISP system includes pioneering work on recovery [16] and some form of undo command is not uncommon in recent interactive systems [2, 5, 12, 13]. While it is probably useful to add facilities for recovery to existing interactive systems, a system designed from the outset with recovery capabilities could also do other things differently. Both the system and its users could be bolder in their actions. The system could take more initiative ....

....modification described above. Several recent systems [5, 12] provide this type of interface, and it may well become fairly common. Another option would be to give undo the semantics of truncate in truncate script modification, but we know of no system that does this. However, some systems [13] provide a related facility that might be called block truncate. The user anticipates recovery needs by means of a checkpoint (meta)command, which causes a mark to be placed in the script. Performing an undo in such a system truncates the script through the last such mark. Thus, the effect is ....

MEDINA-MORA, R., AND FELLER, P. An incremental programming environment. IEEE Trans. Softw. Eng., SE-7 (Sept. 1981), 472-481.

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