The outline numbering dialog [Format->Styles->Catalog->Numbering Styles->Modify]
is a poorly-implemented GUI.  Although the outline format you've entered is
shown in the lower part of the Position tab and the right side of the Options
tab, nothing is shown of this format in the Outline tab.  Indeed, if you
subsequently select one of these options and click OK, your previously entered
settings are lost.  Your only recourse after a wayward click is to re-enter all
your settings.  As well, if you enter this dialog some time later, there is no
way of knowing which of the examples in the Outline tab hold your settings. 
Again, if you click on the wrong one and click OK, your settings are lost for
good.  Expected behaviour for a useful GUI is for the entered Position and
Options settings to be reflected in the Outline tab, that they be saved for
later review, and that the example modified appear as the selected outline when
opening the dialog while the cursor is in a paragraph holding that numbering
style.  The Position and Options settings of the dialog should be reflected in
the Outline tab example that was modified to accept those settings, and all of
this should be saved for later selection and review.  Additionally, the modified
example in the Outline tab should be the default selection when opening this
dialog from a paragraph containing this particular numbering style.

(Supercedes Issue 24375)