# System Parameters

'XF' | Extended File Channels

## Description

Sets extended file mode where the channels range from 1 - 32767 for local files and 32768 - 65000 for global files. Channel 0 (zero) is the console or terminal.

## Default

Off - Channels 1 to 63 are used for local files, and 64 to 127 are used for global files.

#### Note:
Before you turn the 'XF' parameter Off, make sure that none of your currently open files have extended file numbers (which are inaccessible when you SET_PARAM -'XF').