New posts in Primitives

Is there a list of expandable TeX primitives? LaTeX? e-TeX? others?

hide/show complete row of tabular

What's the difference between \hfil and \hskip0cm plus 1fil?

How to fix the Underfull \vbox badness has occurred while \output is active on my memoir chapter style?

Documentation of \mathop

Practical consequences of using \over vs. \frac?

New primitives and grammar for replacing horrible \expandafter

Change \the\year

Is there a printable version of a reference manual for all TeX primitives?