Creating Inline File Text
Inline files are temporary or permanent.
inlinetext . . . <<[KEEP | NOKEEP]
Specify inlinetext on the first line after the command. Mark the end with double angle brackets (<<) at the beginning of a separate line. The file contains all inlinetext before the delimiting brackets. The inlinetext can have macro expansions and substitutions, but not directives or makefile comments. Spaces, tabs, and newline characters are treated literally.
A temporary file exists for the duration of the session and can be reused by other commands. Specify KEEP after the closing angle brackets to retain the file after the NMAKE session; an unnamed file is preserved on disk with the generated filename. Specify NOKEEP or nothing for a temporary file. KEEP and NOKEEP are not case sensitive.