In this video , I start with building a simple flow which counts the sum of all received values on the input ports using the new node-type "merge sum". New ports can be added dynamically from within the UI. This is used to simplify the PID-controller example, which now much more reflects the algorithm that is shown on the wiki-page https://en.wikipedia.org/wiki/Proportional%E2%80%93integral%E2%80%93derivative_controller. I've also started integrating the monaco-editor (which is the base for vs.code) into code-flow-canvas.. and in the video you can see that it is used for editing the code behind the iframe-html-node. Another small change, is that flows now start automatically when they are loaded or after a refresh.