Many individuals have contributed to defining curriculum, with varying perspectives. To understand what might be intended, you'd need to provide more context:
* Source: Where did you encounter this supposed "Lawton definition"? Knowing the book, article, or lecture notes will help track down the actual source and author.
* Specifics: What aspects of curriculum did this definition emphasize? (e.g., content, experiences, goals, process)
With more information, a more accurate answer can be provided.