https://cadabra.science/doxygen/html/classcadabra_1_1keyval__t.html
Cadabra: cadabra::keyval_t Class Reference
keyvalclassreference
https://wiki.contextgarden.net/index.php?title=ConTeXt_and_Lua_programming/Tutorials/Commands_with_KeyVal_arguments&action=edit§ion=0
View source for ConTeXt and Lua programming/Tutorials/Commands with KeyVal arguments - Wiki
https://gnome.pages.gitlab.gnome.org/gtk/gdk4/func.keyval_from_name.html
Gdk.keyval_from_name
Reference for Gdk.keyval_from_name
gdkkeyvalname