To add a comment to a Matrix,

1. jump to the Matrix area where you want to add the comment.
2. Then click on the comment type icon in the Tool Bar.
3. A comment box will appear ready for text entry.
   
4. Insert desired text and press return to enter the comment on the Matrix.

To position comment on the Matrix,

1. Click on Comment to highlight it,
2. then drag the comment wherever you want it on the Matrix.

NOTE: After being positioned manually on the Matrix, the application "hooks" the comment to the nearest EB. If it is repositioned, it will be hooked to the nearest EB again.

To set comment type,

1. Control+click (right click) on the icon border

   (The current Type selection is grayed.)

   
2. Click on the desired type icon
3. the icon and border color will change to the new Type.

Question (red border) = open investigation item
Alert (yellow border) = cautionary note for investigator
Note (yellow) = any other notation desired by investigator

1. Select text in a Comment to highlight it,
2. then edit it.

Alternatively, with Inspector window open,

1. select the Comment
2. edit the text or comment type in the Inspector window.

1. Select comment
2. press Delete key or click on Delete icon in Tool Bar.