1941 Gatan Digital Micrograph File Format (DM3) 3 Image (Raster) DM3 is a file format produced by some Digital Micrography instruments created by Gatan. Please contact the PRONOM team if you are able to provide a more detailed description. 230 Bodleian Library, University of Oxford / Bodleian Library, University of Oxford 29 Nov 2017 29 Nov 2017 fmt/1131 PUID dm3 File extension 1513 Gatan Digital Micrograph 3 BOF version 3 {4} endianness 00 = big, 01 = little {6} (tag directory|tag) {2-256} (2 byte tag length value + tag name which can be of zero length. Theroetically tag name could be ~65k long but limiting to 256 bytes for signature efficiency as highly unlikely to be greater. Scope to extend if necessary though). String "%%%%" EOF: 8 null bytes 1 Absolute from BOF 0 0 00000003{4}000000(00|01){6}(14|15){2-258}25252525 1 Absolute from EOF 0 0 0000000000000000