Please see the second response here.
You should try xelatex which is almost a drop in replacement for
latex.
Leaving aside the technical part, which of no interest to the general audience here, I am interested in knowing what does this "almost a drop in replacement" mean?
I have a general feeling that this means something which will eventually/easily replace something, but I may be wrong.
We have other questions (A, B) here on "drop", but they seem to be different.
Best Answer
It is not (a drop) (in) (replacement), but rather (a) (drop in) (replacement).
It is such a good replacement that you could take away the original, drop in the replacement, and not notice it. Well, almost, according to the text.