Awesome Screenshot lets you capture the whole page or any portion, annotate it with rectangles, circles, arrows, lines and text, blur sensitive info, one-click upload to share.

完美屏幕抓取工具帮助你抓取整个页面或任何一个部分，可以画圆圈、标箭头、划直线以及文字注释，并且提供一键分享功能。

youdao

The text on the arrows represent conditions that must be fulfilled to proceed along the transition and are always described using the format "[condition]".

箭头上的文字表示继续转换所必须满足的条件，总是使用格式“[条件]”来描述。

youdao

When entering or viewing text, a new UI lets users quickly select a word by press-hold and then adjust the selection area as needed by dragging a set of bounding arrows to new positions.

当用户输入或查看文字时，新的用户界面可以让用户按住一点，同时移动来调整选中区域大小。

youdao

As the name suggests, the former lets you mark up PDFs with text, arrows, shapes and highlighter tools, while the latter collates all the added notes into a single "summary" so users can get a visual overview of what's changed.

ENGADGET