Indexing into a string

[DrD]

Quote:I also discovered an at() and of() functions that seem to have something to do with strings, but for which there is no documentation. Can these be of use?

The zero'th list index is also useful. It points to the tail of a list, where the last element can be returned, deleted, or a new element appended to the list.

Example:
L1:={4,9,16}; L1(0):=√(L1);