`.include "FILE"'
=================
This directive provides a way to include supporting files at
specified points in your source program. The code from FILE is
assembled as if it followed the point of the `.include'; when the end
of the included file is reached, assembly of the original file
continues. You can control the search paths used with the `-I'
command-line option (Note:Command-Line Options.). Quotation
marks are required around FILE.