This is a fantastic tool! I've always had to reference a markdown file with SSH tunnel syntax whenever I wanted to create one. I can see myself using this quite a bit in the future.
mole -local 127.0.0.1:3306 -remote 127.0.0.1:3306 -server example@172.12.0.100
ssh -L 3306:127.0.0.1:3306 example@172.12.0.100