Literals are items that are constant throughout the life of the application. Literals include numeric, imaginary, characters,
strings, logicals, and Other (NaN/Inf).
Sparse matrices are a special case of 2D matrices, where only non-zero elements are stored and displayed for efficiency.
A sparse matrix typically has a high percentage of zero elements.
OML language scripts manipulate data through variables. Variables are referred to by their name (alphanumeric) and can be created
(assigned) and deleted as described in this section.