CellDesigner can represent a large variety of biochemical compounds (Genes, RNA, Proteins, Receptors ... We won't use all of them)
Each biochemical entity as a specific symbol (see figure).
Functions related to compounds
Create a new compound: Select an icon (placed in the tool bar) by click and then click a point on the canvas
(draw area), where you want to place the new.
Delete a compound: Select the compound. Menu: Edit --> Delete.
Edit a compound : Double-click an object in the list window, or click with the right mouse button on the target in the draw area, then select [Edit Species]. The dialog box will pop-up to edit the contents of each Species.