Line [math]o[/math] is not incident with point [math]O[/math]. The range is the section of the pencil (the section by the line [math]o[/math]) and the pencil projects the range (from the point [math]O[/math]). Notation for this elementary correspondence is [math]X\bar \wedge x[/math], where [math]X[/math] is a variable point of the range and [math]x[/math] is the corresponding line of the pencil.