The categories of features provided using hotkeys are: display keys, image adjustment keys, and animation playback control keys.
Display keys let you change the view of the image displayed in the FCheck Playback window. Using display keys, you can: display different color channels, display borders of image tiles, zoom in and out, and display the image mask.
For a full list of display keys, see Display keys.
Image adjustment keys allow you to modify the properties of an image. Some useful image adjustment keys are: increasing and decreasing luminance, saturation, gamma, and offset values.
For a full list of image adjustment keys, see Image adjustment keys.
Use animation playback control keys to control the playback of animation/sequences of files. Some features you can perform using animation playback control keys are: forward play, reverse play, pause, adjusting the speed of playback, and toggling to the first frame.
For a full list of animation playback control keys, see Animation playback control keys.