How do I make sure that PDF text is consitently rendered?

Q: Is there anything special I need to do to make the generated image
use the same font as is embedded within the pdf, with some of our test
pdfs the text is drawn in a different font in the pdftron.PDF.PDFDraw
output than is within the PDF file.
A: You need to make sure that all fonts are 'embedded' (and optionally
subsetted to reduce the file size). If the fonts are not present there
is no guarantee that your users or different PDF consumers will see
the same font.