This page is a summary of all the composite versions of part 577b
The background colour indicates the part status :
Official - included in the original LDraw package or an official LDraw parts update - follow link or click image for details
Unofficial - submitted to this Parts Tracker and under review - follow link or click image for details
Reserved - code reserved for a part in development
Obsoleted - code not available for administrative reasons
The range assignments, shown as subheadings, are designed to group together related patterns for parts with many composite versions. The rigour with which these have been applied has increased as more composite parts have been authored. Code asignment in the early days of LDraw was more haphazard. For backward compatibility, older composite parts with codes that do not match the current usage have not been re-numbered.