Intermec Janus 2010 Reference Manual page 100

im_irl_v
The edit parameter determines whether the Reader Wedge parses reader
commands. Use one of the following constants:
IM_DISABLE
IM_ENABLE
If edit is IM_DISABLED, reader commands are treated as data.
The beep parameter determines whether the IRL V command beeps or not
when data is entered.
If beep is set to IM_APPLI_BEEP, the Reader Wedge does not control the
beep. Instead, you code the application to sound a beep when your program
design requires one.
If beep is set to IM_WEDGE_BEEP, the reader always beeps when data is
entered. The beep parameter is one of the following constants:
IM_APPLI_BEEP
IM_WEDGE_BEEP Beeps occur automatically
The display parameter determines if the data is displayed as it is entered.
The display parameter is one of the following constants:
IM_DISABLE
IM_ENABLE
The source parameter determines which input sources are allowed. When
IN/OUT
Parameters: the IRL V command returns, source indicates where the data came from.
When both keyboard and label inputs are allowed, the source always returns
keyboard because it is possible for keyed and scanned data to be
intermixed. Although intermixing is possible, it is not likely to occur.
If you have both the keyboard and scanner enabled, and you want to know
where the data came from, first check the symbology:
3-60
Disable reader command parsing
Enable reader command parsing
Application controls the beep
Disable display of data
Enable display of data