Improve t_u and t_r descriptions.
Improve t_u and t_r descriptions.

--HG--
extra : rebase_source : f630111750ec2f2feaf7442534f4528036ea7975

moonshadow/dactyl,5digits/dactyl,5digits/dactyl,airodactyl/dactyl,moonshadow/dactyl,madand/pentadactyl-pm,nathyong/dactyl,Kjwon15/dactyl,5digits/dactyl,airodactyl/dactyl,nathyong/dactyl,invl/dactyl,madand/pentadactyl-pm,invl/dactyl,Kjwon15/dactyl,nathyong/dactyl,moonshadow/dactyl,nathyong/dactyl,invl/dactyl,5digits/dactyl,invl/dactyl,airodactyl/dactyl,moonshadow/dactyl,Kjwon15/dactyl,madand/pentadactyl-pm,invl/dactyl,5digits/dactyl,airodactyl/dactyl,madand/pentadactyl-pm,moonshadow/dactyl,5digits/dactyl,airodactyl/dactyl,madand/pentadactyl-pm,Kjwon15/dactyl,Kjwon15/dactyl,moonshadow/dactyl,nathyong/dactyl,Kjwon15/dactyl,nathyong/dactyl,madand/pentadactyl-pm,invl/dactyl,airodactyl/dactyl