That was a wordy explanation that wasn’t very clear.
Here is a pic to help.
1. If using the “full editor” in your thread response it will show a little picture icon as shown at the end of my red arrow. Click that icon. Paste in your picture link (and it must end in jpg or jpeg). The bulletin board throws in the correct code and you don’t have to do anything else.
OR
2. You can manually type in [img] (like my green arrow) then paste in your picture link ending in jpg (yellow arrow) and then type in [/img] (blue arrow)
Either way, 1 or 2, works. 2 is just manually doing what 1 does automatically.
Hope that helped clear up my confusing initial effort.