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<P><FONT SIZE="5">4.10 Formal Parameter Lists</FONT><BR>
<P>FunnelWeb allows macros to have up to nine macro
parameters, named <SAMP>@1</SAMP>, <SAMP>@2</SAMP>,
..., <SAMP>@9</SAMP>. If a macro does not have a formal
parameter list, it is defined to have no parameters, and an
actual parameter list must not appear at the point of call.
If a macro has a formal parameter list, it is defined to
have one or more parameters, and a corresponding actual
parameter must be supplied for each formal parameter, at the
point of call.
<P>Because FunnelWeb parameters have predictable names,
the only information that a formal parameter list need
convey is <I>how many</I> parameters a macro has. For this
reason a formal parameter list takes the form of the highest
numbered formal parameter desired, enclosed in parentheses
sequences.
<P>
<PRE>
formal_parameter_list = "@(" formal_parameter "@)".
formal_parameter = "@1" | "@2" | "@3" | "@4" | "@5" |
"@6" | "@7" | "@8" | "@9"
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