Difference between a Tie and a Slur
Slur: Two or more notes of the same or differing pitch can be slurred. When notes are slurred they will be played back in a smooth and connected manner. The command for the slur is Notes: Slur and the quick key is the semicolon ( ; ).
Tie: Two notes of the same pitch can be tied. When notes are tied, the first note will be played and held for the duration of both notes. The command for the tie is Notes: Tied and the quick key is the slash ( / ).
The direction of a slur or tie can be changed by selecting the slurred or tied notes, pressing Alt+Enter and under the Notes tab, setting Slur Direction or Tie Direction to Upward or Downward.