I see it in RAE and almost any admin script. But I can't find it in ROBLOX API either, I dont want like a example just like a basic description.
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What is require() used for?
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ModuleScripts are essential when trying to avoid using the same functions over and over again. Functions, tables, and just about any variable set in a ModuleScript can be used in multiple scripts without the need to re-write them all over again.
Modules scripts only run once no matter how many times called in a server, therefore, the results will never change. When called from LocalScripts, however, it runs once for each individual client that calls require.
Check out the source the above is snatched from here
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