[Histonet] cryo-sections, old question?

[Emily Sours]

while searching through my discarded emails from histonet for another topic,
i found an email with this:
"For the last 5 years I have been promoting a system of face down embedding
tissue
  for frozen section which I developed over my 25 year surgical pathology
practice.
 The system is rapid, very precise and wastes very little tissue."
what is face down embedding? and what is heat-extracting a block--(the email
later mentions you can heat-extract it) couldn't you just cut it off with a
razor blade, or do others try to conserve mounting media and make super tiny
blocks (about 500 ul plus specimen equals tiny to me)?

emily
-- 
When you visualize a man or woman carefully, you could always begin to feel
pity...when you saw the lines at the corners of the eyes, the shape of the
mouth, how the hair grew, it was impossible to hate.
-Graham Greene, The Power and the Glory