Include other file(s) for compilation as if the contents of those file(s) have been inserted in place of the directive. If more than one file is specified, they are included in the order in which they appear in the list FileSpec.
A compile/1 directive can also be used for recursive compilation. However, the semantics is different if the recursively compiled file contains any new module definition. With recursive compile, those module end with the end of that file. However, with include/1, the behaviour is as if the included file has appeared in place, and so the new module will not end with the end of the included file. It is recommended that that include/1 should be used to include the compilation of different files in the same module, and compile/1 used to compile files that contain different modules.
Currently, include/1 is implemented by a call to recursive compile, so it behaves like compile/1. This is to change in future releases. The documentation tools and fcompile assume that include/1 has the correct semantics described previously.