I want to clarify first that I am a beginner, and thus my question might be imprecise or inadequate. Anyway:
I found this documentation file for the package microtype, can be easily found on ctan. It is microtype.pdf. I like the format of the document and the font of the document, so I downloaded the .dtx file and try to see how they got it. Of course, I cannot understand almost anything about the code. Anyway I try to compile it with pdfLaTex. But this does not work, as a series of errors and warnings appear.
I report the last lines of the log file, if they are useful
[1{C:/Users/User/AppData/Local/MiKTeX/2.9/pdftex/config/pdftex.map}
! pdfTeX error (font expansion): auto expansion is only possible with scalable
fonts.
\AtBegShi@Output ...ipout \box \AtBeginShipoutBox
\fi \fi
l.767 %\newpage
! ==> Fatal error occurred, no output PDF file produced!
Transcript written on microtype.log.
texify: pdflatex.exe failed for some reason (see log file).