[Define what a nested list is - how does it differ from a regular list]
[what is the difference, if any, between a nested list and a list of lists or a list with sublists]
[Discuss when using a nested list is important or useful - what are cases where it is a good solution]
[Discuss which Tcl built in commands can be used to build, search, and maintain the list]
If sublists are the same as nested lists, then also see