This function allows you to create speed lines. This effect, often used in manga, creates a sense of speed and makes the image more dynamic.
Once you have prepared a ① frame that you wish to add speed lines to, open the ② Tool Selection window and select the ③ Magic Wand tool.
Use the Magic Wand tool to select only the background of the character.
Then, open the ① Tool Selection window and select the ② Filter.
Select the ① Speed Line.
Drag the ① knob to change the location; move the ② slider to the left or right to adjust the length, thickness, etc.
That's it. Speed lines help to make the frame more dynamic.