This is because page down moves the cursor, and this only happens if the cursor is already on the bottom line of the window. Hold option and press page down and it will behave like it does in most text-editors. All the hidden interesting features could give you a headache...
On Oct 7, 2004, at 1:54 PM, Jeff Ganyard wrote:
The page down key appears to scroll line by line not page by page.
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