here's an example
MessageBox("/Maps/SingleMissions/Necronomicon/Rss.txt")
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are you sure you can handle a dialogue and scripting scene?
and you can create a great map without them
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in general, there are maps on the internet (and maybe even here) with scripting and dialogue scenes
all you need to do is look at the relationship in the script of such a map and understand it
and then copy and paste it to yourself and redo it again for yourself