Purpose: Describe an event loop

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Hopefully someone fills in the answers below!
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What is an event loop?

Why would I use one?

How in Tcl do I program for an event loop?

What are some of the tricks in using an event loop?

What are some of the traps when programming an event loop?

Where else should I read ? [Tcl event loop]


































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Make special mention of [David Gravereaux]'s demonstration with [TES]
of a safe way to combine the Tcl event loop with the Windows message
pump (even in the presence of threading).