These 2 attached pdf are:
1) spring-framework-reference original.pdf
is a technical PDF with the necessary fonts embedded (in fact has embedded just a subset of any font -> this means you don't have to have the font to view the pdf but you have to have the font in order to edit the pdf)
2) spring-framework-reference no fonts.pdf
same pdf as 1. but with no fonts embedded (I removed the embedded font subset

)
Pdf2 because has no embedded font will be seen with the PB90x local fonts (I expect to be better than those created for windows and embedded in pdf1)

. I'm very curios how it's displayed page 51 (in fact in pdf it's written as page 25) - that one with the text
Support for Servlet 3 MultipartResolver.
Please take a picture if you find any difference when showing page 51 for pdf1 then pdf2,

.
PS: do not use the reflow mode !