Returns a range of characters from string

Synopsis

• crange string firstExpr lastExpr

Description

Returns a range of characters from string starting at the character indexed by the expression firstExpr (zero-based) until the character indexed by the expression lastExpr.

If the expression firstExpr or lastExpr starts with the string end, then end is replaced with the index of the last character in the string. If the expression starts with len, then len is replaced with the length of the string.