How to use:

The Rectangle Tool in the Annotation Toolkit allows users to create and modify rectangles on the canvas. It provides options to draw new rectangles, resize existing rectangles, and move them around.

1. Activate the Rectangle Tool: Select the Rectangle Tool from the list of available tools in the Annotation Toolkit.
2. Create a New Rectangle:
   • Click on the canvas to set the starting point of the rectangle.
   • While holding down the mouse button, drag the mouse to define the dimensions of the rectangle.
   • Release the mouse button to create the rectangle.
3. Modify Existing Rectangles:
   • To resize an existing rectangle, hover the mouse over one of its corners until it changes appearance.
   • Click and drag the corner to resize the rectangle.
   • You can also resize the rectangle proportionally by holding down the Command (or Control) key while dragging.
   • To move an existing rectangle, click and drag it to the desired location on the canvas.
4. Finish Modifying: Once you are done creating or modifying the rectangle, release the mouse button.