# Ideas
A common and powerful method of control is grouping messages together into lists, and storing lists in collections to be played back, like a musical score. Methods of creating an playing scores will be discussed.
Also, as projects get more complex, it becomes useful to organize one's patches. Two useful tools are: Sub-patchers and Abstractions.
# Topics
- lists in message boxes: variables
- lists with pack and unpack
- collections
- encapsulating
- abstractions: variables
