The raster on the page changes from symbol presentation to text presentation when a text object is selected and vice versa.
Raster and shown symbols are only visible in the GDE tool, WHMI has different SVG symbols.
The visible display for a single-line diagram is organized in a raster of 9 x 7 (columns x rows). Each symbol (presented in 15 x 15 pixels) included in the drag-and-drop method must be dropped into a raster box.
The description text for an apparatus object can be placed in all four directions around the symbol. The description is part of the apparatus object. It is possible to place the symbols without the assistance of Snap to Grid and manually change the position coordinates.