GFN Highest Available Global Channel

Numeric System Variable

Contents

Integer, highest available global channel

Description

The GFN variable contains a numeric value (integer) representing the highest available (i.e. not open) global file channel. This value will be in the range 64 to 127 (32768 to 65000 if the 'XF' system parameter is set).

See Also

'XF' Extended File Channels

Example

set_param 'XF'
?gfn
65000

set_param -'XF'
?gfn
127