Thank you. The earlier responses seemed like polite dismissals; my apologies for misinterpreting. I believe PDF-XChange would be an even better product with this modification and hope that developer time is alloted to it when priorities allow.

Okay, just one more run at this... (Apologies for referencing web browsers; it just confused the issue). When simply reading a PDF, the space bar works *almost* like page down. In fact, it works like page down *used* to work before the above-mentioned change was implemented. It would be more consist...

This is unfortunate. Most popular web browsers and PDF viewers equate Space with Page Down. And, in looking at the PDF-Xchange customize function, there does not appear to be any way to map this as a shortcut.

Page Down and Page Up work as described for me (v7.0 build 328.1). However, it would be nice (and consistent) if the same change were applied to Space and Shift-Space. Thanks!