TRCREF Command (Traditional)

TRCREF [n] FONT name [DIRECTION {ACROSS | DOWN | BACK | UP}] 
[ROTATION {0 | 90 | 180 | 270}] ;

The TRCREF command specifies the relationship between a font and a table-reference character (TRC) in the data. When specified, the TRCREF command must immediately follow a PAGEFORMAT command. 

PAGEFORMAT
  TRCREF
    SEGMENT
    OVERLAY

TRCREF
Specifies the TRC numbers that can appear in print data.
n
The allowable values are 0 to 126; each TRCREF command must contain a unique number within a page format.

If n is omitted, PPFA automatically adds one to the n value of the previous TRCREF command in the sequence and assigns that value.

The default for the first TRCREF command is 0.

Depending on the value specified for n, the TRC is interpreted by the print server as being either compatible or incompatible