On a Mozart Sonata where it has "Close SchlS", what is this referring to? At the top of the piece it has a list of Abbreviations showing Close= Theme, but the SchlS =Seitensatz. I don't know what this is. Is this a term meaning a certain part of this piece (as the other abbr. are referring to Principal them, secondary theme, etc.) Or is this an abbreviation to something regarding HOW it is to be played? Anyone ever see this?