How to define uniformly larger accents in math?

[quachpas]

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How can the appearance of overline or macron be specified in detail?

In math, the overline(U) is frequently used to denote closure, but the Typst-defined function ‘overline’ doesn’t have a good appearance for some fonts. Is there a way to specify the height, position, length, and thickness of that ‘bar’? One of my attempts is the following: #show math.equation: set text(font: "STIX Two Math", size: 12pt) #let overU = $ limits(U)^(#line(start: (1pt,0pt),end: (8pt,0pt), stroke: 0.7pt) #h(0.6pt) \ #v(-6.3pt) ) $ However, it seems to have some problems when adding…