The examples of when and unless do not provide the "and prints ..."
block that normally accompanies examples that invoke write/display.
Having two expressions in the scope of when/unless and not showing any
output does not expose the implicit begin that comes with these
"one-sided if" syntaxes. Also, there is a missing closing bracket after
(display "2") in both current examples.
What about a joined example for both when and unless, such as:
(begin
(when (= 1 1.0)
(display "1 and 1.0 are considered equal")
(newline))
(unless (= 1 1.0)
(display "1 and 1.0 are not considered equal")
(newline)))
prints exactly one of
1 and 1.0 are considered equal \emph{newline}
or
1 and 1.0 are not considered equal\emph{newline}
depending on the details of the implementation.
Of course, that's an artificial example, but it confirms the existence
of the implicit begin to the reader.
--
Daniel Villeneuve
AD OPT, a Kronos Division
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