Also, for future reference, there are some acronyms you'll find on the site with a dotted underline. If you scroll your mouse over these acronyms, it will give a definition of the term. For instance, run your mouse over the below items:
Mg
Alk
WYSIWYG
Ca
GFO
RTN
STN
There's a bunch of others, but those were a few off the top of my head.