Found in the bottom right of the Houdini window:
As we create objects nodes for them appear in the Network Editor:
Note: Pan and zoom controls work within the Network editor to make navigation consistent with navigation the viewport.
We can zoom right into one of our nodes:
The green and blue bars represent a couple of view and selection options which can be toggled on and off.
Green: Selectable, toggles whether the node object can be selected.
Blue: Visible, toggles the visibility of the object in the viewport.
Colour Coding Nodes
Pressing ‘c’ on the keyboard while in the Network Editor displays a colour pallet, this little tool is useful for organising your scenes as you can apply a set colour to any of the nodes in the editor.
To apply a colour, drag + select the node, then click on the chosen colour in the pallet:
Drag and select 2 or more nodes in the network editor.
In the toolbar click on the ‘Create network box’ button:
The relationship between the 2 nodes in the editor is then represented by a grey box:
As with individual nodes you can also apply a colour to the new group, select the group box and press c on the keyboard to open the colour palette, then select the desired colour:
You can add sticky notes directly in the Network editor by simply clicking on the sticky notes icon. Then click in the note to add text:
Clicking the shape palette icon reveals the shape palette:
Selecting a node in the editor and clicking a desired shape in the shape palette will change the shape of that node: