A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
Yet again an Independent Adviser so keen to post they haven't read / understood the question!
The Clear Format button reverts to the value set in the template as the default for Text . Usually this will be the body forn 18 point txt1.
It is possible to set this to the default you need but some of the values (size especially) require manual adjustment of the XML code so not simple for the average user.