Method XbpMLE():queryFirstChar() Foundation
Returns the position of the first character visible in the XbpMLE screen display.
:queryFirstChar() --> nPos
This method returns a numeric value indicating the position in the edit buffer of the first character visible at the top left of the edit window.
The method :queryFirstChar() is used to determine the position in the edit buffer of the first character visible in the edit window. The first character in the edit buffer and the first visible character in the edit window are different when the text displayed on the screen has been horizontally or vertically scrolled.
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