A list containing a number of example Tables that can be converted to
LongForm dataframes by TableToLongForm. Each Tables is stored as a
character matrix.
These datasets are generally not immediately useful as data, as they
must first be converted (e.g. by using TableToLongForm).
If the user prefers to have these data in their Global Environment
rather than nested inside a single list, they can use
attach(TCData)
.