... e.g., the subparts of an arithmetic operation are the rator (short for “operator”) and two rands (short for “operands”), while the subexpressions of the conditional expression are the test expression, ... expressions may be “wired together.” For instance, the test com-ponent of a conditional must be a boolean expression, while the then and elsecomponents must be numerical expressions.A specification ... > and < in the first example), keywords (then, else, and endif delimit the test, then, and else parts of the first conditional), orexplicit matched delimiter pairs (such as the parentheses and...