Runs a series of DOS commands .BMP Bit Map picture file. The only format used for wallpaper. Can view in Paint. Compressed files holding program setup files. Tutorial file .CFG configuration file usually used with MIDI music .CHK Bad data converted to a file by the Checkdisk or Scandisk program.
Initialization files contain information to set options for a program.
Most common are the Win.ini and System.ini in Windows. Run Sysedit.exe to look at these. Used extensively on the Web and in Digital cameras. Cannot view with older versions of Paint. Newer version work jpg files.