Which function is NOT associated with the source Network Structure?

The function that is not associated with the source Network Structure is generating user interfaces. The source Network Structure primarily deals with aspects related to data handling, message formatting, and parsing, rather than creating or managing user interfaces.

Specifying character sets connects to the way data is structured for processing and communication over the network. This ensures that the messages exchanged are properly encoded and decoded based on the character set defined. Establishing formatting rules pertains to how data should be formatted for transmission, which is crucial for maintaining integrity and readability within message exchanges. Specifying message parsers is fundamental to understanding how messages are interpreted and processed upon receipt.

In contrast, generating user interfaces is a function more aligned with front-end development and user experience, which does not fall under the specific realm of the source Network Structure and its operations.