I'll let you know if I've finished my BOOM port then
-deh <dehfile[.DEH or .BEX]> The -deh parameter allows you to specify a DEHACKED patch to change default engine behavior. You can specify a .DEH file, which is backward compatible to DEHACKED v3.1 format (patch format 6) outside text changes, or a .BEX file which allows BOOM extensions to DEHACKED. See DEH support in BOOM below for more detail. Note the -deh option is new to BOOM, it did not exist in DOOM.