The brush size you choose will determine the width, shape and hardness of strokes made with such tools as the Pencil Tool and the Paintbrush, whether you choose these tools in the Tool Bar or when Stroking a path.
1. The Brush tool becomes visible at the top of the screen when you choose the Paintbrush (or Pencil Tool, bottom of image below). Clicking on the Brush icon brings up a box, allowing you to specify Diameter (how big the brush is), Hardness, Spacing (is the brush continuous or intermittent), Angle and Roundness.
2. Specify the diameter you want (this will take some experimentation). The degree of hardness will determine whether the brush has crisp or fuzzy edges. Spacing allows you to determine whether your stroke will be continuous or not.
The boxes and diagram at the bottom of the box allows you to determine the shape of the brush. We have found that perfectly round strokes end up looking like sausages. We prefer to use a stroke common to calligraphy: an angle of 45% and a roundness of 75%.
3. Clicking on the arrow next to the brush icon allows you to see a number of preset brush types.
4. Clicking the arrow at the right of the Brush Pallette allows a number of options, including the ability to add more preset brushes to the Palette. In our experience, few of these are actually useful to epigraphers.
The Opacity option, shown in the image below, allows you to determine how transparent your stroke will be. Note: ALWAYS do your drawing, stroking, painting, on a separate layer, not on the same layer as the image.