This is the Image Reorderer demo page.

Image Reorderer: To use the keyboard: Screen reader users turn off virtual cursor (insert + z). Select an image using i, k, m or j. Move an image using CTRL + i, k, m or j. View an image by pressing Enter.
To use the keyboard:
Select an image using i, k, m or j, or the arrow keys.
View an image by pressing Enter.
Move an image using CTRL + a direction key.