PenUltima Online

I script from 3 years but I have never used "enum".
Someone can explain me how to use it?

I am not sure what you are talking about here.

Can you explain a little better what you mean by enum?

Is it EnumerateOnlineCharacters?
Is it EnumerateItemsInContainer?

Those are the only things I can think of that have that in it.

enumerator is a language feature used to define a set of constants. It is usually used when you have to declare more than 4 constants, instead of typing const a hundred times, you define an enumerator in the form:

<enum_name> any string value name such as MY_ENUMARATION, and <value>, whatever can be defined as a constant.

edit: you can check the distro SVN repository for more examples.