# What is the function of \noalign?

The use of \noalign is quite common.

For example here \noalign is used with \vskip{}to control the height of a table cell.

How does \noalign work in general, and how does it work with \vskip?

What is the logic behind the use of \noalign{\vskip}?

• I wouldn't say that \noalign is common, if you are talking LaTeX. Indeed it's a low level TeX command (a primitive, actually). Cave canem or Hic sunt leones apply. Nov 14 '13 at 23:22
• @egreg it's more or less common, depending who is answering the question:-) Nov 15 '13 at 0:15
• Have you studied the TeXbook or TeX by Topic? Nov 15 '13 at 7:44
• I think it's a nice mnemonic name meant to be used inside alignment whose content doesn't align (no align). Nov 15 '13 at 8:41
• Martin: No I haven't, but I'm afraid that an answer to a simple question from those huge manuals would require a lot of understanding beforehand. I asked the question here also to provide an answer to others. Before asked the question I tried to search an answer from Google (and here), and did not get any solutions. Also, after your comment, tried to search Texbook from Google, and did find only a .tex -file, which refused to compile.
– np8
Nov 15 '13 at 9:33