of the screen. The function keys were placed on the top row of the keyboard close to their onscreen representation. A crude "Paint" program was available for that permitted a user to create simple bitmap graphics. These could be pasted into Corvus' word processing program called "Edword", which was quite powerful by the standards of the day; it was judged to be worth the cost of the system by itself. The operating system, called CCOS, was prompt driven, communicating with the user using full sentences such as Copy which file(s)? when the "Copy file" function key was pressed. The user would respond by typing the path of the file to be copied. The OS would then prompt for a destination path. Wildcard pattern matching was supporting using the * and ? characters. The OS supported pipes and "Exec files", which were similar to shell scripts. Versions of the Concept running Unix were available; these configurations could not run standard Concept software. The UCSD p-System was available, and a Pascal compiler was available supporting most UCSD extensions FORTRAN was also standard. Built-in BASIC was also an option, enabling the computer to boot without a disk attached. A software CP/M emulator was available from Corvus, but it was of limited usefulness since it only emulated 8080 instructions and not the more-common Z80-specific instructions. Wesleyan University ported the KERMIT file transfer protocol. The entire motherboard could slide out of the back of the cabinet for easy access to perform upgrades and repairs. The system was equipped with four 50-pin Apple II bus compatible slots for expansion cards. External 5.25" and 8" floppy disk drive peripherals (made by Fujitsu) were available for the Concept. The 8" drive had a formatted capacity of 250kB. The 5.25" drive was read-only, and disks held 140kB. The video card was integrated in the monitor's update circuitry. The system had a battery-backed hardware clock that stored the date and month, but not the year. There was a leap year switch that set February to have 29 days. The system had a built in Omninet port on it. The system could boot from a locally connected floppy disk or Corvus Hard Drive or it could be booted over the Omninet network. In 1984, the base 256K system cost with monitor and keyboard and bundled Edword word processor. The floppy drive cost an additional . Hard drives from 6MB () to