It's probably not news to anyone willing to read documentation, but I was able to simplify a number of Node-Red flows recently after a primer on context. In Node-Red, each function node has a self-contained context. Variables are local to that node and nothing is permanent. Unless you use a different context. It is possible to set flow-level and global-level variables that can be used to store values, provide them to multiple other nodes without links, and give the illusion of memory to Node-Red. Setting flow context uses simple syntax: flow.set( 'name of the variable' , 'value of the variable' ) This new flow-level variable can be called anywhere in the same Flow tab. This is great for recording values that don't change every time the flow runs (e.g. a maximum recorded value), or need to be used in isolation from the pathway that generates them. Calling the value is relatively simple as well: var varName = flow.get( ' name of the varia...