Agilent Technologies N-Series - Manual (Page 77)

Page 5-56 User’s Manual
To enter a new tab value, mouse users can move the mouse pointer to any
of the fields indicated by underscore characters, press the left mouse
button, and then type the value of the tab location. Keyboard users can
use t, u or n to move to any of these fields, then type the value of the tab
location.
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