Can somebody explain to me about these three addon:

1. True Addon
   
2. Svcpack Addon
   
3. RunOnceEx addon
   

And, can we make addon with DX's Universal UpdatePack-Addon Creator [DXUPAC]

Last, what's different between switchless installer and true addon/ svcpack addon?

I'm really new to Addon Maker and Windows XP Installer Maker. I've ever use nLite and RVM Integrator but without addon inserted.

Any help and answer is appreciated.

SVCPACK+RunOnceEx:

True addons

Theme:

Program:

SVCPACK or silent switch installers are the normal installer made to install silently, true addons are the program files extracted from the installer and copied to the hdd using INF or other methods