1308 Adobe Multiple Master Metrics font file Multiple Master Metrics (MMM) files are the multiple master equivalent of the single master font PFM files. A multiple master base font is composed of a PFM file, a PFB file, and an MMM file. 188 The Borthwick Institute for Archives / The Borthwick Institute for Archives 01 May 2013 01 May 2013 fmt/521 PUID mmm File extension 814 Adobe Multiple Master Metrics Font file BOF: ....Copyright {158}ÿ.u.........v...è.è. 1 Absolute from BOF 0 0 0A010100436F7079726967687420{158}FF007500000000000000110076000000E803E803