CCT has also adopted a "mise en pratique" (practical instructions) in 2011. "Linux Pratique" in February 2009. He also studied agriculture at the "Institut Technique de Pratique Agricole". The clearance granted is commonly referred to as "free pratique". Advance immigration clearance and radio pratique may be obtained by certain vessels on application. A ship can signal a request for "pratique" by flying a solid yellow square-shaped flag.