A fun hack I remember was that Windows internally used two left-to-right control characters in a window title as an indicator that the entire window should have its content flipped right to left, images and all (imagine a clock animation running counter-clockwise).
This meant that if you could control the window title somehow you could create some surprising behavior, such as putting both those characters at the beginning of a post on a web forum and then having both the web page and browser look backward after someone opened the link.
I believe most things filter for this now, of course.
This meant that if you could control the window title somehow you could create some surprising behavior, such as putting both those characters at the beginning of a post on a web forum and then having both the web page and browser look backward after someone opened the link.
I believe most things filter for this now, of course.