The include directive is not much used in AS3, since organizing code using packages and classes is easy. However, inlcude has a weird thing. No ending semicolon.
Try this:
include "Le Bot src/Skill.as"
So to sum it up:
include is not the same as import.
include does not use curly braces.
include MUST NOT have a semicolon at the end of the line.
inlcude must be on one line in the format of:
include "pathto/myfile.as"
Using include will add the actionscript in the specified file to the timeline where the include is used.
You could also accomplish the same thing by setting a document class that extends the main timeline or a symbol in the library. Doing so adds the complexity of needing to work with classes, but classes pack more than enough power and flexibility to make up for their additional complexity.
For example, using an include, you cannot specify a function or variable to be public or private. They are all public. Using classes makes it easier to make your code Object Oriented, which is a great way to make your projects more programmer friendly.