The discussion revolves around finding resources and methods for using mathematical symbols in a forum setting. Users express a need for an online instruction manual that covers a wider range of math symbols, particularly those not included in the existing Greek letters list. Specific symbols like partial derivatives and integral signs are mentioned as examples of what users are looking for. A user shares a link to a resource that lists various symbols, but others report issues with symbols displaying as "boxes" on their devices. The idea of incorporating an equation editor into the forum is proposed, with the suggestion that it could be feasible once major browsers fully support MathML. Overall, the conversation highlights a desire for better tools and resources for mathematical expression in online discussions.