From OpenSCADAWiki
| Roman Savochenko || -1 ms (parent) |} The element-frame shown in Figure 3.1 is provided for simultaneous observation of trends and control the parameters in the signal object, includes both instances of the widget "Graphics group element" of each parameter (up to 8 or 10) and the primitive "Diagram" to monitor the parameters' trends and browsing history, and also the scroll bar for fast navigation on allowed history of selected parameters for show. The variant in 10 trends is inherited from the base variant in 8 trends and you can create your own variants by inherit the base and append more graphics group elements.