Floppy disk from shareware vendor Software Evolution.
Once installed, contains two add-on levels for Doom. These are COMCON.WAD by Patrick Hipps and CORTYR_B.WAD by Michael Kelsey.
In this upload, the .img file is a disk image created with the GNU "dd"
utility, generally suitable for use in emulators. Note however, as the image is copied from a 720K floppy it may be unsuitable for writing onto 1.4M floppies. A .zip of the files retrieved from the floppy is also
included as an alternative.