ASC (BRL-CAD Geometry)
From Just Solve the File Format Problem
ASC (BRL-CAD Geometry) is an ASCII-format file that contains the data of a BRL-CAD geometry in text form. There are two versions, where the asc2g utility (which converts data from the binary to the ASCII form of BRL-CAD geometry data) will create the old format if the original data is from an old version, while it will use the new (Tcl script based) version for new data. On the other hand, the inverse asc2g utility, which converts from ASCII to binary, will convert all ASCII files (old or new) to the newest database format.
