Horizontal spacing syntax in latex16 Nov 2021
I typically use
\quad to get more space in latex, and knew there were other space commands to use in-text, but had never remembered them past one use. Well, Andy Roberts has a neat 3-page guide, Horizontal spacing in maths.
In particular, spaces all smaller than a quad are:
\, is a small space,
\: a medium space,
\; a large space, and
\! a negative space,
but for full details check the doc from Andy Roberts.