When listening to real world musicians one of the things that adds
expressiveness and life to a piece of music is the way that the musician adds
a Glissando, or slide, between the notes of a phrase. 

Your sound card or external device needs to support these Controller messages
in order to use them. Once you have created and saved your piece, here's one 
way that you can add these nuances to your MIDI tracks.

1. Click on Window->Controller Editor (or press the ALT+W keys and then 
   press the number 2)

2. In the first dialog box at the top left hand side of the screen, 
   change the Controller to 65 Portamento.

3. Choose the pencil tool and draw a line at the beginning of your piece 
   from 0-128.

4. Change the Controller to 5 Portamento Time.

5. Choose the pencil tool and draw a line before the note(s) where you want 
   to add your Glissando. You would normally want this number to be between 
   58 and 78 depending on the amount of time you want before your slide 
   takes place. Higher number values result in longer times before the slide
   occurs.

6. After you have your Glissando, you need to end with a Controller 5 with a
   value of zero or you will continue getting glissandos between the rest of
   the notes in your piece.

7. Once you have entered your Controller numbers and values, you can then edit
   them in the Event List window. You can get to this window by clicking on
   Window->Event List (or by pressing ALT+W followed by the number 6.
   Once in the Event List you can edit the Start Times for the Controller
   messages as well as the actual Controller values to hear the exact slide 
   that you envision.

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