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Matrix Names

A matrix is referred to by a valid SAS name. Names can be from 1 to 8 characters long, beginning with a letter or underscore and continuing with letters, numbers, and underscores. You associate a name with a matrix when you create or define the matrix. A matrix name exists independently of values. This means that at any time, you can change the values associated with a particular matrix name, change the dimension of the matrix, or even change its type (numeric or character).