tmp would be a useful life display element. But the uses for it would be far and few between. Frankly I wouldn't mind tmp displaying on a UI for debug or maybe a different color when present on Life display
Wee need to have a CType display for why you are trying to figure out which of your PCLN particles have which CType (it would be REALLY anoying to debug your PCLN by having to turn on every PCLN and see what comes out of it. In CType display, all elements that don't use CType variable will be black. The elements like CLNE BCLN PCLN etc will show their CType by using that element's color (just like in normal view you see element's Type by color, in CType view an element's CType would be shown by its color).