Origin [edit]. The systematic use of belt color to denote the rank was first used by Kano Jigoro, the founder of judo, who first devised the colored belt system using obi (sash), and awarded the first black belts to denote a Dan rank in the 1880s. Previously, Japanese Koryu instructors tended to provide certificates.
Everything for a safe and comfortable trip. Air safety is the theory, investigation, analysis, and categorization of flight failures (aircraft incidents and accidents), and the prevention of such failures through regulation, education and training.
Consequently, the casement/awning is the most airtight of all styles of operating windows, which maximizes the warmth in the rooms to keep you comfortable year round. One thing to be aware if is that most casements and awnings have ugly clips to hold their screen in place â but Soft-Lite is unique.