MVS/TSO Kermit Historically, there have been several different Kermit programs for TSO, largely due to the fact that CUCCA has not used TSO and has, therefore, never been in a good position to give centralized direction to the development or support of TSO Kermit. On several occasions, a TSO Kermit program was devised just to add support for one new feature which was, at the time, unavailable in existing Kermits. The situation was simplified considerably when the main features of the existing TSO Kermit programs were incorporated into TSO Kermit-370, and some programs could be (and were) retired from the Kermit distribution. The most advanced TSO Kermit is, in fact, the TSO variant of Kermit-370, a generic 370 version of Kermit which supports all styles of front ends capable of carrying Kermit file transfer and which runs on several IBM/370-compatible operating systems. The files for TSO Kermit-370 have names beginning with IKT and IK0 (I K Zero), the latter group being shared with the other variants. TSOKER was basically the original IBM VM/CMS Kermit written at Columbia, adapted at the University of Chicago to run under MVS/TSO through line- mode connections (3705 asynchronous ASCII ports) only. TSOS1 was TSOKER adapted at the University of Toronto to run through Series/1-style front ends only. These front ends run the Yale IUP, and do 3270 full-screen protocol conversion. TS3KER was TSOKER modifed to run through the 3708 front end under VTAM in line mode. TSNKER is an outgrowth of TSOKER, largely rewritten and converted from assembler to ALP at NIH, with many more features and capabilities than TSOKER. However, it currently supports only line-mode connections. TS2KER is the CMS Pascal/VS Kermit CM2KER adapted to TSO. Other TSO Kermit programs were never included in the distribution.