Purpose: Collect references and information about the concept of events.
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It's useful to distinguish two kinds of event processing in Tcl,
that having to do with stream-oriented input-output
[[some reference here]],
and the events of [Tk]'s WIMP user interaction,
detailed in "[windowing system events]".  Note, though, that both exploit the [notifier].

It's also important to understand the [Tcl event loop], and the general concepts of [Event programming and why it is relevant to Tcl/Tk programming].

Is there also an idea of some sort of user defined events - something not
associated with either window systems or I/O?

''[escargo] Maybe [How to mimic event generation without TK]''?

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