Tenuto and Staccato in Lily

[Peter Chubb]

Hi,
        Thanks for all the good work so far on Lilypond.

        One niggle:  It's usual for staccato and tenuto and such-like
        markings to be put outside the staff, so they're easy to see.

        Lilypond puts them at a fixed distance from the notehead,
        instead.  This is a problem, say, for a stem-up a' or b' in the
        treble clef.

        And lily never seems to put such markings over a stem, even
        when that'd be more apropriate.

        Can this be fixed easily?
            Peter C