The red underline in your posts that you may see means that the word is either mis-spelled or a word that the dictionary does not recognize.

Mac users: Your cursor needs to be over the word that has the red underline (i.e. the word that needs to be corrected). You just need to mouse over the word underlined in red, the hold down the Control key and click your single button mouse and the correction menu should pop up. Then you just click on the correct spelling of the word and it will be corrected for you. If you happen to have a 2 sided button mouse attached, then right click the mouse and that same menu will pop up.

PC users: Your cursor needs to be over the word that has the red underline (i.e. the word that needs to be corrected). If you happen to have a 2 sided button mouse attached, then right click the mouse and that same menu will pop up and click on the correct spelling of the word and it will be corrected for you.