I'm studying TeX from The TeXbook. I was asking myself, just for exercise, if there is a way to obtain a non-italicized
\varepsilon in a simple way, without using some outer package but just with some basic TeX-hacks. At the present time, I cannot succeed in that. So I'm asking to you: is there such a way? Can you point out to me something on this respect?
I'm using plain TeX and the Computer Modern font family.
Is there, maybe, a way to remove the italic from
\varepsilon? Is there maybe a way to bend the upper part of a character balancing the slant?
Is there some family of fonts similar to the Computer Modern but that allows me write that
I tried to use another font (one which would allow me to write Greek letters) but the result is ugly to me, since I would like to write something as
same character type.
Any idea will be appreciated.