vBulletin Architecture?

[GBSteve]

Is there an article somewhere that explains the general vB "nitty gritty" for folks who want to add functionality but need to know how much of the vB guts they need to dig into?

[Adrian Schneider]

This is a good start,
https://vborg.vbsupport.ru/showthread.php?t=99570

[Dismounted]

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