Method XbpBrowse():panUp() Foundation
Scrolls down up line.
:panUp( [<nRows>] ) --> self
:panUp() returns a reference to the XbpBrowse object.
:panUp() scrolls the visible area of the browse window upwards and reads a new value for the first data row from the data source. If the first data row is already visible, the browse window remains unchanged.
The position of the browse cursor is not changed by :panUp(). Therefore, the code block assigned to the :hitTopBlock instance variable is not evaluated when scrolling reaches the top of the display.
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