<html> <head> <title> Vinyl Records </title> </head> <body> <h1> Vinyl Records </h1> Vinyl records were recorded at different speeds. Standard speeds were 16, 33<img src="http://www.dgp.toronto.edu/~ajr/gen/13.gif" alt=" 1/3">, 45, and 78 RPM. <p> Some people miss them, but I like CDs much better. </body> </html>
The space in the alt text is crucial. Without it, a web browser not displaying images might display "331/3", running the "33" and "1/3" together, which means something entirely different. (The current version of Firefox, for example, seems to do this, if you'd like to see it in operation.)