# Write TeX Engine

What do I required if I want to write a TeX engine.

Now I am reading The TeXBook, when I finished, I will read source2e next. Thus I am pretty curious about how to write a TeX engine myself, and what knowledge do I need to know.

SinceI am an undergraduate student, there will be many opportunities to get in touch with TeX in the future, so this is not an eagerness to achieve.

• In TeXLive, there are source2e.pdf and source3.pdf. Nov 17 '18 at 9:23
• You probably mean a TeX format rather than engine. Nov 17 '18 at 9:28