2.2.2.4 Display Tokens
Display tokens, such as control tokens, do not perform operations or push values onto the stack. Display tokens PtgParen (section 2.5.98.64) and PtgAttrSpace (section 2.5.98.30) are used at runtime to represent parentheses and space characters in a formula when parsed expressions are converted into textual formulas. Display tokens do not affect the order of operations of the formula.