# Math spacing

TeX handles math spacing by breaking a formula into parts, and assigning each of those parts a role such as 'Ord' (a variable or number) or 'Rel' (equality, larger than, et cetera). For each combination of roles, it then looks up the spacing appropriate between them in a table. These are the roles:

 Ord e.g. 4 or a or x2 Op Unary operators such as sin or ln. Bin Binary operators such as '+' Rel Relationships such as '=' or '>' or '\implies' Open open brackets of any kind Close closing brackets of any kind Punct Punctuation: digit separators like '.' or ','. Inner Fractions are inner. What else is inner?

To set up e.g. the spacing between ordinal items, do as follows[since 2012]:

```\startsetups math:morespacing
\ordordspacing\textstyle 1mu plus .5mu minus .25mu\relax
\stopsetups
```
```\setupmathematics
[setups=math:morespacing]
```