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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: {| class=wikitable| Ord || e.g. ''4'' or ''a'' or ''x<sup>2</sup>''|-| 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 dec 2012): \startsetups math:morespacing \ordordspacing\textstyle 1mu plus .5mu minus .25mu\relax \stopsetups \setupmathematics moved to [setups=math:morespacing] [[Category:Math/basic#Spacing]]
Replaced content with "moved to Math/basic#Spacing"
