gfxmode 640 x 480 is smaller then the help list

[Bram Diederik]

the gfxmode=640 x 480 is Smaller then the help list.
It looks like the width of the help is just to long, (perhaps one or two chars)
After every row of help commands there is a empty row,
doubling up the needed rows. pushing the upper rows out of the console.

It seems Nvidia (8400GS) has a additional problem.  pci-e
grub pauses after every width wrap in the console. limiting good cli usage
the latter is no issue on the intel ich9 (internal)

grub.conf:
### BEGIN /etc/grub.d/00_header ###
set default=0
set timeout=5
set root=(hd0,5)
if font /share/grub/unicode.pff ; then
  set gfxmode=640x480
  insmod gfxterm
  insmod vbe
  terminal gfxterm
fi
### END /etc/grub.d/00_header ###