When commenting a function/method parameter in Doxygen style, the tooltip pop-up for that variable doesn't show the comment.

E.g., with this

    /** Compute square of an integer
     * \param [in] x The integer to be squared
     */
    unsigned int
    sqr(const unsigned int x)
    {
        unsigned int r = x*x; /**< The square */
        return r;
    }

the context window for `x` says

    const unsigned int x
    Container: sqr Kind: Variable constant 
    Decl.: sqr.c :5 Show uses

It would be nice to have, e.g.,

    \param [in] x The integer to be squared

some something like that appear in that tooltip window, similarly to how

   The square

appears in the tooltip for variable r.