Indexes need not necessarily be dry.
— HENRY B. WHEATLEY, How to Make an Index (1902)
When an index entry refers to a page containing a relevant exercise, see also the answer to that exercise for further information. An answer page is not indexed here unless it refers to a topic not included in the statement of the exercise.
# (number sign or hash mark, can indicate hexadecimal constants like #
∂ (shadow), 372.
(upper shadow), 372.
(TRUE), 202 ...