ugBASIC User Manual

   INCLUDE "filename"

The INCLUDE command allows you to insert a source from an external file. In practice, what happens is that the content of the file, without any interpretation, is copied “as is” at the point where the statement was inserted. All variables and scopes will be maintained.

If you have encountered a problem using this command, if you think there is a bug or the explanation is unclear, please open an issue for this keyword on GitHub. Thank you!