| Definition | LaTeX | mu* | Result |
|---|---|---|---|
| Default | |
0 | $$f q$$ |
| Thin | \, or \thinspace |
3 | $$f \, q$$ |
| Medium 1 | \: |
4 | $$f \: q$$ |
| Medium 2 | \; |
5 | $$f \; q$$ |
| Half of current font size, 0.5em | \enspace |
6 | $$f \enspace q$$ |
| Current font size, 1em | \quad |
18 | $$f \quad q$$ |
| 2x Current font size, 2em | \qquad |
36 | $$f \qquad q$$ |
| Space in normal text | \ |
NA | $$f \ q$$ |
| Negative space | \! |
-3 | $$f \! q$$ |
| * 1em (current font size) = 18mu |