Sketch 
Sketch a shape using a single stroke.
If your drawing is recognized as a standard shape, it’s replaced by that shape; to use your drawing instead, choose it from the palette that’s shown.
Draw 
Draw a shape using a single stroke. Press your finger more firmly on the trackpad to draw with a heavier, darker line.
This tool appears only on computers with a Force Touch trackpad.
Shapes 
Click a shape, then drag it where you want. To resize the shape, use the blue handles. If it has green handles, use them to alter the shape.
Highlight 
Click the Shapes button, then click the Highlight button. Drag the highlight where you want. To resize it, use the blue handles.
Enlarge 
Click the Shapes button, then click the Loupe button. Drag the loupe to the area you want to magnify. To increase or decrease the magnification, drag the green handle; drag the blue handle to change the loupe size. You can place multiple loupes on a photo to magnify specific areas.
To further magnify an area, create another loupe (press and hold the Option key while you drag an existing one), then position it over the other loupe, using the alignment guides to adjust its position.
Text 
Type your text, then drag the text box where you want.
Highlight Selection 
Highlight selected text.
Line Style 
Change the thickness and type of lines used in a shape, and add a shadow.
Border Color 
Change the color of the lines used in a shape.
Fill Color 
Change the color that’s used inside a shape.
Text Style 
Change the font or the font style and color.
Rotate Left 
or Rotate Right 
Click the Rotate Left tool to rotate an item to the left. Continue clicking to keep rotating.
To rotate an item to the right, press and hold the Option key, then click the Rotate Right tool until you’re done rotating the item.
Crop 
Hide part of an item. Drag the corner handles until just the area you want to keep is shown within the frame. You can also drag the frame to reposition it. When you’re ready, click Crop.
Image Description 
Enter, view, or edit a description of an image. (The tool is highlighted when an image has a description.)
Image descriptions can be read by screen readers and are useful for anyone who has difficulty seeing images online. For example, if you’re using VoiceOver, the built-in screen reader on Mac, you can press the VoiceOver command VO-Shift-L to hear a description of the image in the VoiceOver cursor. To learn more about VoiceOver, see the VoiceOver User Guide.
Annotate 
Annotate an item by sketching or drawing on it using your nearby iPhone , then choose a device. The tool may appear highlighted to show that your device is connected. To disconnect your device without using it, click the tool again.
