If you have MSWord, you could compose the post there. Take as much time as you like. When you get it complete, open the forum, copy the text from the document and paste it into the thread on the forum.
Sometimes what I do on the forum is I type something quickly and post it. Then I remember the thousand other things I should have also included. I go back to the post and click edit and then add what ever I missed. At the end of the edit when you click Save it shows the edited post.
Ed & Bev Felker
Retired USAF Col and retired Nurse
Traveling with Lily & Bella ('Teddy Bear' breed)
2015 Vegas 24.1 (E-350)