chicken and would run into each other in the center of the console. Teco easter egg The command 'make' allowed a user to make a text file and automatically enter the TECO text editor. If a user typed 'make love', the system created a file called 'love' and typed back, 'Not War?' Open Files List Kevin Herbert, later working for DEC, added an undocumented feature in the 90's to allow a user to enter to see a list of open files the user process had, complete with blocks in use and file sizes. Stardate Beginning with version 9.0, an undocumented feature would allow the system manager to change the display of the system date. RSTS became the first operating system that would display the system date as a set of numbers representing a stardate as commonly known from the TV series Star Trek. Add-ons by other companies System Industries bought the only source license for RSTS to implement an enhancement called (SImultaneous Machine ACceSs), which allowed their special disk controller to set a semaphore flag for disk access, allowing multiple WRITES to the same files on a RSTS System where the disk is shared by multiple PDP-11 RSTS systems. This feature was implemented in System Industries controllers that were attached to many DEC computers and designed by Dr. Albert Chu while he worked at System Industries. The main innovation was use of a semaphore, a flag to indicate which processor, by cooperative sharing, has exclusive write access. This required many changes to the way access to disks was accomplished by the RSTS operating system. The FIPS (File Information Processing System) system, that handled i/o access, was single-threaded in RSTS. To allow a disk access to stall while another machine had active access to a block, required that the FIPS could timeout a request, go to the next request and 'come back' to the stalled one in a round robin fashion. The code to allow this was written by Philip Hunt while working at System Industries, in Milipitas, California. He eventually worked for Digital Equipment in the New England area in the late 1980s and early '90s. SIMACS was not limited to the PDP-11 product line; VAXen could also use it. RSTS emulations ROSS/V In 1981, Evans Griffiths & Hart marketed the ROSS/V product. ROSS/V allowed all user mode processes of RSTS (CUSPS, RTSs and user programs) the ability to run