: Users often download custom topographic maps or "OSM" base maps in compressed archives to load onto portable GPS devices. 2. Industrial & Technical Software

: Integration software used for subsea navigation and acoustics (like DVLs). This often includes driver files and installation documentation.

: A software used in high-end commercial printing (Raster Image Processor) to manage output to printers and platesetters.

Since ".rar" is a compressed archive format, you will need a specialized tool to extract the contents before you can use the "proper piece" (the actual software or data) inside: