fpcsubst-3.0.2 -h (return code: 1)
Usage: fpcsubst-3.0.2 [options]
Where options is one or more of
-i filename Set input file. Default is standard input
-o filename Set output file. Default is standard output.
-d name=value define name=value pair.
-h show this help and exit.
-u name remove name from list of name/value pairs.
-l filename read name/value pairs from filename
-b show builtin list and exit.
-v be verbose.
Warning: This utility is deprecated and will be removed from fpc in the future. Please use fpcmkcfg instead.