alias GlueNodeSubtype

---

(alias) GlueNodeSubtype = (0|1|2|3|4|5|6|7|8|9...)
    | 0 -- userskip
    | 1 -- lineskip
    | 2 -- baselineskip
    | 3 -- parskip
    | 4 -- abovedisplayskip
    | 5 -- belowdisplayskip
    | 6 -- abovedisplayshortskip
    | 7 -- belowdisplayshortskip
    | 8 -- leftskip
    | 9 -- rightskip
    | 10 -- topskip
    | 11 -- splittopskip
    | 12 -- tabskip
    | 13 -- spaceskip
    | 14 -- xspaceskip
    | 15 -- parfillskip
    | 16 -- mathskip
    | 17 -- thinmuskip
    | 18 -- medmuskip
    | 19 -- thickmuskip
    | 98 -- conditionalmathskip
    | 99 -- muglue
    | 100 -- leaders
    | 101 -- cleaders
    | 102 -- xleaders
    | 103 -- gleaders

😱 Types incomplete or incorrect? 🙏 Please contribute!