The Frame painter Actions tab has the following tools from right to left:
To paint with. Ensure the button is highlighted and the color is set correctly to your taste. Simply click and paint on the image. You must click Next or Prevous to save the painted changes.
The size of the eraser is set using the same radius tool of the brush.
Color sampler eyedropper
Select this tool and then move over your frame. Click on whichever color you wish to sample. This color appears in the color box, you can then select the brush to paint with.
Paste previous painting
Press this button to paste whatever you painted on your last saved frame onto the current frame. This is ideal if you want an image to be repeated.
Select this tool if you wish to move the image. It does not move the painted image.
Create a shape which prevents drawing outside of the lassoed area. Works across multiple frames.
turns off the lasso
Undo / redo
These buttons will undo and redo in steps. Note this only works with non saved frames.
Check your painting with previous painted frames using the onionskinning slider. This is great for seeing incremental changes.
Navigating in the Frame editor
Step through frames using the Previous and Next buttons at the bottom right of the window.
Use the Best fit and Full size buttons to size your image. You can also zoom in and out using the scroll wheel on your mouse, select the Move tool before clicking though!
Those using DSLR cameras with EVF or a video assist can use the drop down menu on the Frame type tab to select which image they are going to paint on, the high resolution frames, stored frames or the video assist frames.