Semiformal Visual Languages, a case study

Visual programming, also called graphical programming or software CAD [3], refers to computer based software design techniques centered around a graphical representation of software, with a supporting environment that allows for automatic program generation and fast prototyping. Those fields where a graphical description formalism existed prior to the introduction of computer tools are, by far, the best candidates for visual programming techniques. We used a graphical description formalism for the specification of computer based learning (CBL) lessons long before we decided to create a computer based development environment to support our methodology and reduce our development costs [7][8]. The development environment is now operational and this paper will try to draw more general conclusions from this experience in regard to the use of semiformal visual languages, i.e. a combination of a visual representation of software and natural language. Semiformal Visual Languages, a case study B. Ibrahim 2