Added 600mil resistor and capacitor symbols; they are simply equivalents to the original 900mil-long resistor-1 and capacitor-1, but drawn rather smaller, 600mil from end to end, which fits a bit more nicely with existing IC symbols (whose pins are e.g. 400mil apart). Additionally, the default value attributes are preloaded with a value containing the common special character for the part ("0Ω" and "0.1μF", respectively) so the character map isn't necessary. Other parts may be added to the scale-600mil dir even if they are not two-pin devices (BJTs and FETs are likely additions), in which case they need not necessarily be 600mil in any dimension, as long as they are essentially compatible with the scale.
Added normal (rectifier), schottky, and zener 600mil symbols. Changed the existing resistor and capacitor to use * in the value to indicate that it is intended to be filled in.
Added scale-600mil BJTs and MOSFETs. The pnp and p-mosfet have the apparently unusual property of being vertically flipped from their counterparts, which is how they should normally appear in a schematic.