To create a new shape


  1. Click the Create New Rectangle tool or the Create New Ellipse tool.
  2. Position the pointer on a page of the PDF document and do one of the following:
    • To draw a new rectangle or ellipse, drag diagonally.
    • To draw a square or circle, hold down the SHIFT key while dragging.
    • To draw a rectangle or ellipse, starting from its center and not from its side, hold down the ALT key (Windows) or Option key (Macintosh) while dragging.



    1. Drawing from side keeps the sides of the shape in a fixed position along the x and y axis

    2. Drawing from center keeps the center point in a fixed position.


    • To draw a square or circle, starting from its center, hold down both the SHIFT key and the ALT key (Windows) or Option key (Macintosh) while dragging.