The screen sample or texture functions
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'Direct output' in the general adjustment menu increases the speed.
By pressing the middle marker and pulling with the mouse the screen sample can be moved and additional by pressing a shift key it can be also turned.
By the helping of the corner markers the screen sample can be increased / reduced.
The middle border markers permit horizontal / vertical increase / reduce.
Starting from 16 bits depth of shade you are able to alter the intensity of the screen smaple with the keys + and - (blending).
In order to tip, distort etc. a sreen sample the desired button have to be selected (if the mouse goes over the icons a explanation is shown in the info line of the drawing window).
The markers have dependent on the chosen function another effect on the screen sample.
By switching on the button 'real time' in the general adjustment menu, the screen sample is calculated when shifting the markers in real time, if the computer is fast enough.
The calculated screen is finally set, if you click beside the markers.
If you click onto the icon with the triple arrow, the toolbox switches again to the drawing functions.
If starting from 16 bits and a screen sample is drawn with 'Transparency', the background colour is omitted.
The screen sample is mixed into the picture.
You can make photomontages, if you cut a picture out and colour the not desired sections of the picture with e.g. the magnify to the background colour. You could also use transparency function.
If you want to save work and are an lucky owner of a video camera, you can digitize in front of a blue background (e.g. carton) and process the film with the bluebox filter or the gradiation curve.
Then this film can be copied into another film.