Tips for creating a block language with blockly

Blockly is an open source library that makes it easy to add block based visual programming to an app. It is designed to be flexible and supports a large set of features for different applications. It has been used for programming animated characters on a screen; creating story scripts; controlling robots; and even generating legal documents. But Blockly is not itself a language; developers who use Blockly create their own block languages. When developers create an app using Blockly, they should carefully consider the style, which blocks to use, and what APIs and language features are right for their audience.