Read (additional) command-line options from the file
Name of a text file containing command line options. It's possible to use multiple lines in the file. The options may be separated by spaces or line breaks, and support double-quoted strings to allow spaces in parameters (like the real command line). This file can itself contain additional @file options.
The @file compiler option tells the compiler to parse the specified file to find more command line options. The options found in the file are treated as if they were found on the command line. This can be useful to pass very long command lines to the compiler, for example on DOS, where command lines are limited in length.
Print "TEST=" & TEST
fbc @options.txt opts.bas