Make available the complete list of field formatting codes.
for example %<\AcObjProp.16.2 Object(%<\_ObjId 2785853843472>%).Length \f "%lu2%pr0">%
There is no official complete guide, only what people have figured out through trial and error, like %lu sets format and %pr sets precision. These are not intuitive and it would be very helpful to have a complete dictionary of all the codes.
Thank you.