<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Mar 22, 2020, at 12:42 PM, Paul Koning <<a href="mailto:paulkoning@comcast.net" class="">paulkoning@comcast.net</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class=""><br class=""><br class=""><blockquote type="cite" class="">On Mar 22, 2020, at 11:57 AM, Robert Armstrong <<a href="mailto:bob@jfcl.com" class="">bob@jfcl.com</a>> wrote:<br class=""><br class=""><blockquote type="cite" class="">Paul Koning <<a href="mailto:paulkoning@comcast.net" class="">paulkoning@comcast.net</a>> wrote:<br class="">It's the base level designation.<br class=""></blockquote><br class=""> Thanks, Paul. So did the base level releases come before the real<br class="">release, as in something like alpha test, beta test, field test, etc? That<br class="">would that mean that "10.1" (no letter) is a later release than "10.1L"?<br class=""><br class=""> Or was it the other way around - the base levels were issued after the<br class="">main release ? In that case 10.1L is later than 10.1?<br class=""></blockquote><br class="">No, the base levels were during the development cycle. So the first internal checkpoint would have bee 10.1A, beta might have been 10.1G or something like that, and production release a few baselevels later so L. The release would get whatever base level designation applied to the final baselevel of the release cycle.<br class=""><br class="">There was also a DEC convention, I don't remember if RSTS used it but I know RT11 did it at least at one time, which is to use the V prefix for production releases, X for internal development baselevels, and Y for beta. I have tucked away a copy of RT11 Y02-20, so a beta snapshot of the V2 release.<br class=""><br class=""><span class="Apple-tab-span" style="white-space:pre"> </span>paul<br class=""><br class=""></div></div></blockquote></div><br class=""><div class="">The RSX family also used base level for describing both internal and external releases although the actual naming conventions differed between the various products:</div><div class=""><br class=""></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 10px; line-height: normal; font-family: Monaco;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"> </span>RSX-11M-PLUS V4.6 BL87 2044.KW System:"RSXMPL"</span></div></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><div style="margin: 0px; font-stretch: normal; font-size: 10px; line-height: normal; font-family: Monaco;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"> </span>1920K (word) IAS Version 3.4A Baselevel 3414</span></div><div style="margin: 0px; font-stretch: normal; font-size: 10px; line-height: normal; font-family: Monaco;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div style="margin: 0px; font-stretch: normal; font-size: 10px; line-height: normal; font-family: Monaco;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> John.</span></div><div style="margin: 0px; font-stretch: normal; font-size: 10px; line-height: normal; font-family: Monaco;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div></span></div></body></html>