# INFDEF
> [HTML Version](infdef_set.htm)
SET supports an INFDEF option to display or change the list of default INFLD codes (previously only able to be set via the SBR=INFDEF setting in miame.ini). Syntax:
.SET INFDEF (display)
.SET INFDEF (replace current defaults with )
[MX\_INFDEF](mx_infdef.htm.md)[xs](mx_infdef.htm.md) allows the same capability from within a program. If _opcode_ is 0, the current default type codes are returned in the INFDEF parameter, otherwise the current default type codes are replaced by those in the INFDEF string.
The maximum size of the default string is currently 36.
This feature is of course handy for experimenting with global INFLD _type_ codes within a single job (without interfering with other jobs). It may also be useful for changing the defaults with a single program. Note that for a particular INFLD call, you can disable the default _type_ codes by adding **m** to the _type _parameter passed to INFLD.