Function infixr

MathBox/mathbox-core.js:32685–32693

(id, bp, led)

}

function infixr(id, bp, led) {
  var sym = symbol(id, bp)
  sym.led = led || function(left) {
    this.children = [left, expression(bp - 1)]
    this.type = 'binary'
    return this
  }
  return sym
}

function prefix(id, nud) {
  var sym = symbol(id)