Sketch shapes
Sketches contain the basic diagram shapes, such as rectangle, circle, cylinder, diamond,
image, URL, RichText note, and actor. You can interpret the shapes per your design requirements and
use them. For example, the notes shape can be used for linking annotation to any other model element
and Rich Text note for an enhanced text formatting options.

Rich Text note is added with enriched text formatting options. Besides emphasizing the text with
bold, italics, underline, strikethrough, and quotation mark options, you can also list, align, link,
and change the font and its size. 

Known limitations: The display of the Rich Text note
shape might not be as expected on Chrome browsers and on monitors with screen resolutions other than
the recommended 1920 x 1080 pixels.