I had no idea MS-DOS had autocompletion for folder names. That may come in handy at some point in the future.
I usually use slash commands for in-game configuration of my AddOns because they're easier to write than full-blown GUIs. Often my AddOns are small enough that I don't bother with in-game configuration at all and just put some variables at the top of the main Lua file with comments explaining what they do.
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