UI Builder and action code and lists

[lbb2y]

Three questions here. Is the only application used to develop is the soe provided UI Builder (aside from txt editors and generic xml editors). Next question is when using actions aside from the '/' commands listed at the top of this forum what else can you do inside of an action. Also is there a list somewhere of the properties of the objects and a list of objects aside from the soe provided document? Thanks

The reason I'm asking about this? I think something better and easier to use could be developed as an alternative to the UI Builder.