What does this code mean?

{%menu_start=1%} {menu_end=1%} {%menu_display%}

The drop down menu next to the URL button labeled Normal is the text size BBCode editor for the job.

Highlight the chosen text with your mouse then pick the appropriate size text size option from the drop down menu. Around your chosen text should be the follow BBCode command [ size=200 ] [ /size ] (spaces added so the code can remain visible in my posting.

Looks like it's a templating language, so you'd just put markup in it to make the font bigger. I can't tell what those variables are outputting, which precludes me from giving you the best answer (css that targets the generated elements) but you should be able to do something like this:

So just highlight the code and pick a new font size?

That's a big 10-4.

No, he confused your question with one asking how to make the font for your text on this forum bigger. It's not going to make your text in whatever code that is bigger, it's going to output bbcode onto your website or application.

Oh I see. So is there a way to alter the code that I posted o change the font that appears on the website. I just want to make it a little bigger.

A couple of posts up I gave you html that should work if it's a web application.