Textual-paint is a program that emulates MS Paint within the terminal. It can be installed using pip and run within the terminal. However, when used in Warp, a reimagined command line terminal with unique features like AI assistance and team collaboration, hover effects do not function correctly due to issues with mouse-hover events being conveyed to the PTY (pseudo-terminal). The interplay between the terminal and PTY, as well as ANSI escape codes, play crucial roles in this interaction. Warp initially did not support reporting mouse motion events, which led to the need for identifying the appropriate ANSI escape code for mouse motion. After implementing mouse-motion reporting, hover effects were successfully enabled within textual-paint on Warp.