Display actions with mouse over (basically how you have to click, as described)
Display actions somewhere else on the screen, like in a splash screen (not preferrable) or at the top or bottom of the window (perhaps disappearing [and can maybe reappear] after the user starts clicking stuff)
Use more affordances (e.g., buttons) in the nodes themselves
A mouse hover already pops up a tool tip, the information "Double click to open/close the examples and right click fore more actions" can be added to the tool tip information.
The functions Shift- and alt- clicking does and be represented as options in the list that pops up when we right click on a node. (Similar to issue #26).
But in that case, this should be applied to every function node. (In #26: it was suggested for Parent Node)
Double-clicking a function node opens the examples. Shift- and alt-clicking toggles how many arguments you'd want to see in a function.
These aren't specified or obvious in the interface. How can we make them clear?