The Model 38 (ASR-38) was constructed similar to and had all the typing capabilities of a Model 33 ASR with additional features. A two-color ribbon and ASCII control codes allowed automatic switching between red and black output while printing. An extended keyboard and typewheel supported upper- and lower-case printing with some additional special characters. A wider pin-feed platen and typing mechanism allowed printing 132 columns fan-fold paper making its output similar to the 132-column page size of the then industry standard IBM 1403 model printers.