A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.
for questions asking about the meaning of a patent-related term, or for the difference among several different terms.
Question relates to the means by which the user and a computer system interact, in particular the use of input devices and software.
US patent class 717: software development, installation, and management
US patent class 707: data processing: database and file management or data structures
For questions relating specifically to the description part of a patent. General information: the description is not what the patent protects, only the claims define the scope of protection.
World Intellectual Property right application, and question relates to procedures and rules followed in PCT.
Questions specifically relating to the patent system of the United Kingdom.
US patent class 345: computer graphics processing and selective visual display systems
Questions related to the Patent Application Information Retrieval (PAIR) system at USPTO