check for a symbol with a given suffix
type(x, suffixed(y, stype))
symbol, string, or set or list of either symbols or strings
A call to type suffixed with one parameter checks whether a symbol or string x has the same type as y, and x begins with the characters of y.
With two parameters, x is checked to see if it has the same type of and begins with the characters of y and that the balance, when parsed, is of type stype.
If y is a set or list, then x is checked against each operand of y.
Note that x and "x" are considered to be of type suffixed(x) and suffixed("x"), respectively. Also note that parse will automatically simplify the balance, so "x6/2" and "x4!" is an "x" suffixed by the integers 3 and 24, respectively.
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