dat/ldr/mpd usage are guide lines, not mandatory (except for the library part files).
Even if you put your type 1 lines in a .txt it should still be usable by standard compliant parsers.
A realword example of this is the l3b extension SR3DBuilder uses.
Even if you put your type 1 lines in a .txt it should still be usable by standard compliant parsers.
A realword example of this is the l3b extension SR3DBuilder uses.