The default mouse wheel scrolling direction changed, in NX 10.0, to a forward scroll to zoom in. If you prefer the pre-NX10 setting of backward scroll to zoom in, you can change this setting:

To redefine the wheel scrolling direction do the following:

• Go to File »Utilities » Customer Defaults.

• This will launch the Customer Defaults dialog. Under the Gateway header, on the left side of the dialog, select View Operations.

• On the View Operations tab you can change the Mouse Wheel Scrolling Direction setting, as shown in the following image.