A note is a diagram comment that has no semantic influence on the model elements.
Connect a Note shape to one or more elements
Drag the control handle at the center of the shape and glue it to a connection point on another element.
Name a Note shape and add a stereotype and other property values
Double-click the shape.
Type the body of the note
Double-click the Note shape. Click Comment, and under Documentation type the text you want, and then click OK.
Hide the stereotype on a Note shape
Right-click the shape, click Shape Display Options, and then, under GeneralOptions, clear Stereotype.