[plt-scheme] Error in Reference Guide (Parameters 10.3.2)

The documentation for make-derived-parameter appears incorrect.  It is at
least somewhat misleading

http://docs.plt-scheme.org/reference/parameters.html#(def._((quote._~23~25kernel)._make-derived-parameter))

The docs say that the arguments to make-derived-parameter are:

    v: any/c
    guard: ...
    wrap: ...

which makes it looks like its an extended version of make-parameter, when in
fact its real arguments appear to be:

    p: parameter?
    guard: ...
    wrap: ...

The first argument is a parameter not the initial value for a parameter.

-- 
Christopher W. Bowron <chris at bowron.us>
[ Nothing is exciting if you know what the outcome will be ]
   - Joseph Campbell
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