Scrolls one page up so that the first line (truncated or whole)
of the current page becomes the fully visible last line.
The caret is scrolled the same number of lines so that its location
relative to the top line remains the same. The exception is the beginning
of the text where a full page scroll is not possible. In this case the
caret is moved in front of the first character.
Scrolls one page up so that the first line (truncated or whole) of the current page becomes the fully visible last line. The caret is scrolled the same number of lines so that its location relative to the top line remains the same. The exception is the beginning of the text where a full page scroll is not possible. In this case the caret is moved in front of the first character.