Tieports1-4
From WikiManual
The Tieports1-4(currently) allow bots to access tie lengths and angles without specifying the tienumber. It is hoped that this will allow bots to evolve more interesting multicellular behaviors with them.
Tieang1 allows a bot to change the angle of the bot located at tieport1, tielen1 is similar allowing bots to change the length.