howto quickly move to the left side of a zoomed pdf in xpdf?

[Zhengquan Zhang mailing list <zhang.zhengquan.mailinglist@gmail.com>]

I enabled the vikeys and felt a little more comfortable with xpdf, but the
fonts are still very small, so I zoom in alot, but since my screen is not so
large I have to move from the left to the right and from the right to the left
very often, using the mouse is very clumsy.

Anyone have a solution to this using the keyboard?

Thank you!