TMEP § 1402.11(a)(iv)
"Office functions" appears in the Nice Class Heading for Class 35. The following services are essentially office function services (e.g., filing and record keeping) that happen to be conducted with the use of a computer:
Computerized web services include website-focused activities the primary function of which is to promote, advertise or market the websites of others by improving a website’s visibility in search engine results. For example, the following are acceptable identifications: