There is no key to select the previous Pro/NC parameter in "Parameter" tab !
Pressing "Enter" or down/up arrow key in parameter window
Just blind tip ... did you try TAB for forward direction and SHIFT+TAB for backward direction ?
Just a side note, ability to populate the drop down menu with "F4" key only works when the parameter tab is docked to dashboard, as soon as parameter tab is expanded "F4" key stops working
thank you for your not,.
TAB and SHIFT+TAB move the highliht to ribbon functions...