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Syntax	expression1 - expression2
Action	The arithmetic subtraction operator yields the difference of the values of expression1 and expression2.
Examples	3 - 0.5    » 2.5 The number 3 is "promoted" to a double, the type of 0.5, in order to perform the subtraction. "workfile.backup" - ".backup"    » workfile The subtraction operator works with strings; the result is the removal of the first occurrence of the second string from the first string. "abc" - "def"    » abc The second string does not appear in the first, so nothing is removed.
Notes	UserTalk employs automatic type coercion when evaluating arithmetic and comparative operations; the two expressions need not be of the same type to be subtracted. Generally, the resulting type - which determines the method of subtraction - is the more complex type, the one that can most readily represent both values. The minus operator can also appear before a single operand to indicate arithmetic negation.
See Also	+ * / %