Options.RevisionsBalloonPrintOrientation (Word)

Returns or sets a WdRevisionsBalloonPrintOrientation constant that represents the direction of revision and comment balloons when they are printed. Possible return values are wdBalloonPrintOrientationAuto - Microsoft Word automatically selects the orientation that keeps the zoom factor closest to 100%, wdBalloonPrintOrientationForceLandscape - Word forces all sections to be printed in Landscape mode, regardless of original orientation, and prints the revision and comment balloons on the side opposite to the document text, wdBalloonPrintOrientationPreserve - Word preserves the orientation of the original, uncommented document.

Sub PrintLandscapeCommentBalloons() 
 Options.RevisionsBalloonPrintOrientation = _ 
 wdBalloonPrintOrientationForceLandscape 
End Sub