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Some relevant additonal user settings to mention are the ‘Debug access' and ‘Debug' settings. These settings can be used for debugging purposes obviously.
Debug access: if this setting is enabled, the debug access button becomes available on the top right corner of the screen. With this option, the access rights of all elements (functions, page functions, objects, page includes) currently shown on the screen, can be evealuated.
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Debug: if this setting is enabled, the scripts being executed are shown in a logging section. The user can see if scripts are being executed and if scripts are being executed correctly (information can be shown from scripts via echos).
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