TEX — Comment of 7.3.4Arc (Class)

"An entity represented as a segment of the outline of an ellipse. It is defined by the ellipse it is part of and the start and end angle of the arc on that ellipse. The arc is defined in a clockwise direction from the startangle to the endangle."
Are startangle and endangle meant to reference the attributes in the table that follows or are they meant to be known terms? They either need a space or a capital letter depending on meaning.