Look at the number Mod 1. When you look at a number Mod n, you just divide by n, and look at the remainder. So here you divide by 1, and the remainder is just the fractional part. The best way to do this depends on the language.
Simple paint a long horizontal black stroke on a scratch piece of paper and then once it dries paint your watercolors colors in short vertical strokes on top of it. If the paint appears to sit on top of the black stroke the paint is opaque.
Enamel paint can be used on glass and any other glossy or non-glossy surface. I find this a most versatile option for an opaque finish. When I want solid coverage I love enamels! PermEnamel by Delta was discontinued in 2011.I was saddened to hear that because it was an impressive and durable opaque paint.he resulting tooth allows regular acrylic paints to adhere. Jo Sonja Glass & Tile Painting Medium is a two-part system featuring a glass primer, Part A. Then the medium (Part B) is added to the Jo Sonja Acrylic Gouaches so that the paint can bond to the surface permanently. Does not require heat setting.