Topics

Here is a list of all topics with brief descriptions:

Dirty	Handles the repaint of some part of the screen
Snowline functions and data structures
Rows and columns in the viewport	Columns are vertical sections of the viewport that are half a tile wide
Hierarchical widgets	Hierarchical widgets, also known as nested widgets, are widgets stored in a tree
Hierarchical widget parts	To make nested widgets easier to enter, nested widget parts have been created