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