A gallery of all the themes included with PlantUML.
This project is maintained by The-Lum
Extended Backus–Naur Form (EBNF) is a type of formal syntax used to specify the structure of a programming language or other formal language. It is an extension of Backus-Naur Form (BNF), which was originally developed by John Backus and Peter Naur to describe the syntax of the Algol programming language.
See PlantUML Extended Backus-Naur Form (EBNF) for more information.