PLAYGROUND
The editor window consists of four components:
- The header at the top, containing the deploy button, main menu, and, if user authentication is enabled, the user menu.
- The palette on the left, containing the nodes available to use.
- The main workspace in the middle, where flows are created.
- The sidebar on the right.
The main workspace is where flows are developed by dragging nodes from the palette and wiring them together. The workspace has a row of tabs along the top; one for each flow and any subflows that have been opened.
Source:www.nodered.org