# Why does half of my question not show in the preview? [duplicate]

When I post, half of my question isn't shown. Why is this?

## marked as duplicate by Laurel, Nathan Tuggy, Glorfindel, Catija♦, aleDec 21 '17 at 19:18

A < can be interpreted as the beginning of an HTML tag. You have two options to avoid this:
• use &lt; instead, so that the parser knows your not starting an HTML tag
• use MathJax if that's enabled on the site, like this: $0<y<=1$, or even better: $0<y \le 1$. As a bonus, this will nicely format your question like a scientific paper: