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HELP ISCLOSED John Gibson, July 83 isclosed(<device>) -> <boolean>; or isclosed(<character_repeater>) -> <boolean>; Given a device record, or a character-repeater for a device produced by *DISCIN or *DISCOUT, this procedure returns TRUE if the device (or underlying device in the procedure case) is closed, e.g. discin("myfile") -> char_rep; isclosed(char_rep) => ** <false> ... (read characters from char_rep until *TERMIN produced) isclosed(char_rep) => ** <true> See also HELP *ISDEVICE - recogniser procedure for a device record NOT DONE HELP *DEVICE - on I/O device descriptors in POP-11 HELP *DEVNAME - returns name of file for which device was created HELP *DISCIN - creates a character repeater for a file or device HELP *DISCOUT - creates a character consumer for a file or device HELP *POPDEVERR - returns the device for the standard error channel HELP *POPDEVIN - returns the device for the standard input channel HELP *POPDEVOUT - returns the device for the standard output channel HELP *POPDEVRAW - returns the device for 'raw' terminal input/output