• Find in overlaps / contains sublist of any shape
• Depth switching
○ Contains searches for min depth in max depth
• Determine whether a list matches a pattern based on a function
○ Expressed as whether for every overlapping pair, the second item is a predicate of the first
○ Eg alternating between positive and negative
• Things that compare shape, depth
• Modifier at the end of a program wraps the rest of the program in a function
• When grouping, non-function overload things go into the group.