Do RM2k3 uses Common event for script or they really have?

Okay... So, I had seen the engine of RM2k3 and I didn't found anything about script editor. Browsed around the internet, they said that the script can be write in the common event. I also took a peek inside the common event feature and it wasn't that bad. However, it made me curious where do the script come from. Is it really from the common event or they really don't have it. Also, I find that RM uses Ruby programming script. Can RM2k3 uses it too?

That's all of it, sorry about my English and/or wrong place to put this thread

Short answer: the RGSS was introduced with the RMXP, the RM2k3 does not support any scripting language by default.

However, its event system is still powerful enough to realize a lot of things.