HELP POPDEVERR Revised by Fran Evelyn, July 85
popdeverr -> device
POPDEVERR is an active variable which holds the device for the standard error
channel (written to by *CHARERR). Assigning to it,
<device> -> popdeverr
enables a new device to be assigned to the standard channel, and can be used
along with updating POPDEVIN and POPDEVERR to redirect standard I/O after
SYSFORKing a child process, and before SYSEXECUTEing a new image.
See also
REF *SYSIO - for more on Input/Output procedures
HELP *CHARERR - outputs characters to the user's terminal
HELP *POPDEVIN - the device for the standard input channel
HELP *POPDEVOUT - the device for the standard output channel
HELP *POPDEVRAW - the device for 'raw' input/output from the terminal
HELP *SYSFORK - forks the current POPLOG process
HELP *SYSEXECUTE - runs a file in place of current POPLOG image
--- C.all/help/popdeverr -----------------------------------------------
--- Copyright University of Sussex 1987. All rights reserved. ----------