paragraph mode

Infopackets Reader Fran G. writes: " Dear Dennis, Thanks so much for your recent articles on Mozilla Thunderbird. I have a question regarding Thunderbird as well. Whenever I respond to an email from someone, during the composition I usually press ... Enter twice on the keyboard to start a new paragraph. This happens most of the time. However, if I start a new email and then begin a new paragraph, I only need to press Enter once on the keyboard. This is very inconsistent and confusing! Can you explain why this is and/or explain how to fix it so paragraphs are the same all the time? " My response: ... (view more)