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A-Shell Reference

(Windows only) The -z switch causes the A-Shell session to be totally invisible, not even showing up in the task list, although it will still show in SYSTAT. This can be useful for special situations such as background daemons, CGI commands, etc.

To make an invisible window reappear, the job itself can execute XCALL MIAMEX,77,FLAG, where FLAG is anything between 1 and 11, covering the various ways in which a window can be displayed; see the sample program MIAMEX.BP in EXLIB:[908,30] for more details. Or, you can remotely force the job to reappear using SEND <jobname> !—that is, send it a message consisting of a single exclamation point. This latter method uses the InterJob Communication (IJC) system which operates on a frequency set by the IJCFREQ setting in miame.ini.