This specifies the format control character that the LPR Print Monitor
should send to the print server through the control file. By default, this
parameter doesn't exist in the Registry, and "l" (lowercase L) is sent as
the control character. This can be set to any string. If set, the first
letter of the string is taken (the rest of the string is ignored) as the
format control character and sent to the print server. Some situations may
need 'f' to be used instead of 'l', and this parameter can then be used.
Setting this parameter to 0 disables job removal (that is, once submitted,
the job cannot be removed using LPRM, no matter who submitted it
originally). If for any reason it is required that LPDSVC not delete a job
from the queue once submitted, this parameter should be set to 0. Default
is 1 (that is, allow a job to be removed--if request to remove is from the
computer that submitted it originally).
AllowPrinterResume: REG_DWORD: 0x1
If a printer is paused, by default anyone can cause it to be resumed by
sending the appropriate LPR command. If this parameter is set to 0, request
from anyone to resume printer is ignored. Default is 1 (that is, honor any
request to resume printing).
MaxConcurrentUsers: REG_DWORD: 0x64
This parameter specifies how many users can concurrently send a job to
LPDSVC. Default is 100.