What does PR stand for ?

When keyboarding, if you want to be fast and accurate you should return your hands on home row with your fingers relaxed and your eyes on the text use only your index fingers to hunt and peck keep your fingers stiff and your eyes on the keys slouch in your chair and keep your fingers hovering over all of the keys

Idon’t understand the double8 coding problem. it is java

Hazel has just finished adding pictures to her holiday newsletter. she decides to crop an image. what is cropping an image?