alias RadicalNodeSubtype

---

(alias) RadicalNodeSubtype = (0|1|2|3|4|5|6)
    | 0 -- radical
    | 1 -- uradical
    | 2 -- uroot
    | 3 -- uunderdelimiter
    | 4 -- uoverdelimiter
    | 5 -- udelimiterunder
    | 6 -- udelimiterover

Reference:

• Corresponding C source code: texnodes.c#L686-L692

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