If a SNePS molecular node is unasserted, and you wish to assert it, you may do so by calling this function and then pressing the middle button down while the mouse cursor is over the node. The SNePSUL macro ! will then be called with the node as its argument and any changes to the network will be reflected in the Display window. Note that you may not do anything to a network or a node through XGinseng that you normally cannot do while in the SNePSUL environment since XGinseng executes top-level SNePSUL commands.
Aborting: You may abort the execution of this function by pressing right down over any node in the Display window.
This function is different from the function found in the XGinseng Input Commands button panel. This function deals only with nodes that have SNePS counterparts.