Thanks for the reply. I went back to AutoHotKey & re-entered the script, saved it & this time it worked! So, I must have missed something the other 4 times I tried it. I tested it here¢°°°°°¢¢¢¢ & in Thunderbird.
Originally Posted by wartaaids
I don't understand this part: "But be aware that this will replace this string every time you type it. so choose one that is unusual." I type Alt+o & get °, how/why is it being replaced? This is my actual file: