CircleMinus[x, y] displays as x\[CircleMinus]y.

Low-level functions for converting between expressions and boxes. MakeBoxes generates boxes without evaluating its input. MakeExpression interprets boxes but uses ...

InputForm[expr] prints as a version of expr suitable for input to Mathematica.

AtomQ[expr] yields True if expr is an expression which cannot be divided into subexpressions, and yields False otherwise.

Converting between strings, boxes, and expressions. Here is a simple expression. This gives the InputForm of the expression as a string.

NumberFormat is an option for NumberForm and related functions that specifies how the mantissa, base, and exponent should be assembled into a final print form.

StringLength["string"] gives the number of characters in a string.

StringReverse["string"] reverses the order of the characters in " string".

UnderscriptBox[x, y] is the low-level box representation for UnderscriptBox[x, y] in notebook expressions.

Mathematica supports full Unicode throughout—in strings, symbols, graphics and external operations—allowing immediate streamlined use of all standard international character ...