The problem comes when the icon that it defaults to for printing is a right load, but the only way that envelopes can be loaded is in the center of the tray. I have an HP Colorlaserjet 3600 and an HP Officejet Pro 8600 and both load this way.
A technical definition of a function is: a relation from a set of inputs to a set of possible outputs where each input is related to exactly one output.
Mathematics. ( 1 of a function of a complex variable) having a first derivative at all points of a given domain; holomorphic; regular. ( 2 of a curve) having parametric equations that represent analytic functions. ( 3 of a proof) using analysis.