New posts in Catcodes

About catcodes and active characters

What does the comment-pln code actually do?

How to redefine characters as alignment tabs in a table

Change the catcode and then define a (Unicode) character

Macro char `#` doubles when made letter?

Why not catcode11 (letter) but catcode12 (other) is used for verbatim?

Redefining a letter to itself

When is \catcode executed?

How to make powers without enclosing the exponent in a pair of curly braces?

Print catcodes as subscripts