When Apply to Synced Drawing Layers is on, some operations will apply to the current drawing layer and all layers synced with that layer in the Camera View. Turn on and off the Apply to Synced Drawing Layers mode.
When Apply to Onion Skin Range is on, some operations will apply to all the drawings visible in the onion skin. Turn on and off the Apply to Onion Skin Range mode. Turn on and off the Apply to Line and Colour Art mode. Wjhen Apply to Line and Colour Art is on, some operations will apply to all art layers of the drawing. When Apply to All Frames is on, some operations will apply to all frames on the selected drawing layers. Turn on and off the Apply to All Frames mode. Activate Magnifier temporarily or toggle it permanently if pressed with ALT.