If a @<value-form> is omitted, then the value of the corresponding @<var>
is used. It is conventional usage for a macro to wrap @|once-only| around
its body so as to convert the arguments which it should evaluate into safe
If a @<value-form> is omitted, then the value of the corresponding @<var>
is used. It is conventional usage for a macro to wrap @|once-only| around
its body so as to convert the arguments which it should evaluate into safe
Evaluate the @<condition>. If @<condition> is non-nil, then bind @|it| to
the resulting value and evaluate the @<consequent>, returning all of its
Evaluate the @<condition>. If @<condition> is non-nil, then bind @|it| to
the resulting value and evaluate the @<consequent>, returning all of its