[gopher] Selector types summary

[Cameron Kaiser]

> tn3270, evidently, is a different kind of telnet session.

http://en.wikipedia.org/wiki/IBM_3270

I used actual IBM terminals for this, up until around five or six years
ago, to a CICS/RACF app on an IBM mainframe.

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  Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com
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