Ansco Reprolith Ortho film

I just found a partial box of 4x5 Ansco Reprolith Ortho film. Develop by date is June 1965. I don’t see any info on this film anywhere. Does anybody know anything beyond what’s obvious from the name?

Maybe I’ll just shoot a few sheets at a low ASA and develop in Ansco Universal Developer and see what happens.

Ortho lith is graphic arts film good for halftone (screened photos) and line work.