A comment is a note to yourself or another programmer; it is ignored by the compiler.
There are several ways to construct comments:
{ Text between a left brace and a right brace constitutes a comment. }
(* Text between a left-parenthesis-plus-asterisk and an asterisk-plus-right-parenthesis also constitutes a comment. *)
// Any text between a double-slash and the end of the line constitutes a comment.

