This document discusses various limitations that graphic designers must consider when creating television idents. Some key limitations mentioned are screen tempo, readability of complex fonts, number of colors used, aspect ratio, adherence to the channel's tone, and time constraints of typically being 20-30 seconds. While these pose limitations, the document also notes they can provide clear guidelines for designers and make the job easier, such as sticking to a channel's established colors or fonts. Overall, the limitations help ensure idents clearly and briefly communicate their intended messages to viewers.