The code detector thinks your white space is indicating code line indents. So just post as code, which means that your lines will be numbered. Not a big deal.
However.... the code detector also picks up excess spaces throughout lines, and at the end of lines (I think 3 consecutive spaces will trigger it). A simple solution to find those concatenated spaces is to put your post in a notepad, and hit CtrlA; the spaces will be highlighted.
Was trying to type it out neatly, but was leaving too much
white space between the numbers.
Thought I was making it easier to read.
Have now submitted the question under "System Restore".
Thanks again for your help.