Repligator Tutorial 4: Improving Image Quality
Step 0) In the previous tutorial you created several images. (If you have closed Repligator between this tutorial and the previous one then repeat the previous tutorial, it should take you a minute at the most!)
Step 1) Now you have several transformed images. Go to one which you like using the keyboard cursor keys or the 
buttons.
Step 2) Push "Q" on the keyboard or click on the
icon. You will get the image quality dialog:
Here is an example of the difference between low quality (on the left) and high quality (on the right) versions of the same image:
As you can see the high quality does not have the stepping (or pixellation) of the lines. The larger the image the less likely that you need to use the high quality settings.
Tutorial 5 : How to make vignettes with Repligator