# MX\_PREBAS

> [HTML Version](mx_prebas.htm)

_Reviewed and revised May 2024_

**xcall MIAMEX, MX\_PREBAS, filename, status**

MX\_PREBAS (MIAMEX 16) invokes the PREBAS pre-compiler, scanning the input file for \$COPY directives and merging the result into an output file with a "cpy" extension.

**Parameters**

_filename_  ([String](string.htm.md))  \[in\]

the file to be pre-compiled in DevPPN or host format. Default extension is "bas".

_status_  ([Integer](integer.htm.md))  \[out\]

returns 0 for success, else 1 for error