Some layout programs include style sheets for images in addition to text. This is an example of a halogen addition reaction. Most studies show no benefit from the addition of chemotherapy. Credits in addition to writer also noted. They are sometimes found in forms extended through the addition of -n or -t. Subtraction also obeys predictable rules concerning related operations such as addition and multiplication. OxygenPlay is the biggest addition to the interface. The set of integers forms a ring with the operations addition and multiplication. This proved to be the last monumental addition made to the Forum. Levels as low as 7% of addition can be detected. See, for example, the proof of commutativity accompanying "addition of natural numbers". One after another success in addition to laurels for acting. Intensity is added by the regular addition and subtraction of layers of sound. This led to the addition of a jobs category. The matrix product is distributive with respect to matrix addition.