Function
Informs GEORGE that the operator is unable to implement a system request.
Format
CANTDO system request
The parameter is enough of an extant system request to be unique.
System requests are messages output on the operator's console that
begin with the word PLEASE. For example, if
PLEASE LOAD *MT 70310
is a system request, the corresponding CANTDO command is
CANTDO LOAD *MT 70310
Spaces are not significant in the parameter of the CANTDO command.
Forbidden contexts
NOT OPERATOR
Execution
If the parameter of the command does not identify an extant system
request, the error message
z IS NOT AN EXTANT REQUEST
is output on the operator's console.
Otherwise GEORGE will take the alternative action that is standard for the activity that generated the request; for example, it may generate a command error or program failure in the job concerned.
If CANTDO is issued in reply to a system request to engage a basic
output device, the device will be WRONGed automatically and the following messages
will be output at the operator's console:
UNIT peripheral description
WRONGED
UNIT peripheral description FREE
The device can be made available for use again by issuing a
RIGHT command for it.
Example
CANTDO ENGAGE UNIT 21
Note
The CANTDO command should only be used when inability to implement the request is likely to be permanent. If the operator does not take the action requested and does not issue a CANTDO command, GEORGE will wait until he does, periodically repeating the request on the operator's console.
Error Messages
PARAMETER TOO SHORT TO IDENTIFY MESSAGE
z IS NOT AN EXTANT REQUEST
MESSAGE PARAMETER MISSING