"label" - mkraska/meclib GitHub Wiki
[ "label", "name", [x, y], color ]
label, text anchor is center left, typeset in text mode. To use MathJax math mode bracket the label with \\( \\).
"name"label text[x, y]position of text anchorcolor(optional, default:"black") label color
Example

[
[ "grid", "x","y", -5,5,-4,5, 50, [10,10], [0,0] ],
[ "label", "name", [2, 2] ],
[ "label", "\\(A\\)", [3, 2], "red" ],
[ "point", "", [2, 2] ],
[ "point", "", [3, 2] ]
]