From OpenSCADAWiki
Creating a new frame — mnemonic schemes
Let's raise the level and create a new frame, on which we'll put the basic displaying elements of values of our controller parameters. Such frames are usually called the mnemonic schemes and in addition to the dynamics displaying, and even in the first place, contain a static image of the technological process in the mnemonic representation. We are not going to focus on static creation and will add the dynamic elements and link them to the parameters of our controllers. And we'll put the created frame to the tree of our project.