In the Courses tab, tap the name of the course you'd like to view. Or if it is available, tap the Assignments icon.
On the toolbar you can manage your annotations.
To add highlight, underline, squiggle, or strikethrough annotations, tap and hold the Text Formatting icon .
To type text or add a comment, tap and hold the Free Text icon .
To add thin drawing, bold drawing, arrow, line, or shape annotations, tap and hold the Drawing icon .
To add an image, tap the Image icon .
To undo changes, tap the Undo icon .
To move the toolbar, tap and hold the drag handle , and move it to the new location. The toolbar can be relocated to either side of the screen.
Use Text Format Options
The Text Format option allows you to highlight , underline , squiggle , and strikethrough  text.
Use Drawing Options
The Drawing option allows you to draw thin lines , bold lines , arrows , lines , and rectangles . Tap the arrow to view additional shape drawing options .