I've updated the former "L3P -check Messages" page on the PT to use the new chart we developed at the Billund Meeting. This page has been renamed to "Common Error Check Messages" and the table is sortable. For legacy purposes, the URL (https://www.ldraw.org/library/tracker/ref/l3pmsg/) will remain the same until I move the entire PT reference section (Prim Ref excluded) to the main site.

As part of a larger effort to streamline and consolidate the rules for authoring parts, the LDraw.org Standard Board (LSB) has ratified an update to the document formerly known as "File Format Restrictions for the Official Library".

It's new name is "LDraw.org Official Parts Library Specifications" and can be found here:
https://www.ldraw.org/article/512.html

While there is not much new in terms of actual rules, this is a complete rewrite of this document incorporating several different documents. Rules that have been adopted by the LSB but only documented here on the forums or in out of the way areas of the main site have been added or clarified. Additionally, there new rules for patterned part descriptions, patterned part !KEYWORDS, and sticker shortcuts.

A new specification has also be ratified: "Official Library Part Number Specification", https://www.ldraw.org/part-number-spec.html
This document details the part numbering rules for the official library and, like the library spec, incorporates rules from several different sources.

It it our hope that these two documents, in addition to the "Official Library Header Specification", make it easier for parts authors to create parts for inclusion in the LDraw Official Library by locating the rules in one centralized place.

With the ratification of these two specs, several pages on the main site and Parts Tracker reference section have been retired and archived. Every effort has been made prevent accidental access to these pages. If you find an incorrect or broken link or you find yourself on a page that you think is out of date, please let the admin know so we can fix the problem.

Additionally, if you find minor administrative errors (spelling, grammar, formatting, etc...) in these documents (or anywhere else) please start a thread in the Website Discussion Forum.

Hello! I'm starting in this fantastic world of drawings and cad projects for Lego. I am doing work with characters and environments from WWII and I have observed, in all the programs I use, that there are no accessories for this theme. My biggest difficulty is getting the torsos of the minifigures with military uniforms (in fact, it is not even a specific problem of WWII; I cannot find these models for any army at any time). I wonder if there is an "unofficial" catalog with these parts - since the Lego iconography with the theme of wars and armies is quite rich, as you can see on Flickr and other social networks - or if it is possible that I myself build these models for later rendering. Thank you in advance for your attention!

Please vote on ratifying the following draft updates to the existing parts restrictions spec:

https://www.ldraw.org/article/512draft.html

Please vote on ratifying the following draft spec:

https://www.ldraw.org/part-number-spec.html

Isn't it written somewhere where the word Pattern should be placed in the description?
If not, should there be a rule?

I have installed LDraw just recently and opened up LDCad. However, none of the pieces are showing up on the GUI. Is there something I did wrong during the installation process? All of the pieces were installed to my knowledge.

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Hello Orion or anybody else with access to the Parts Tracker,

I noticed a strange text flow problem on the Parts Tracker which probably can be corrected with some trivial CSS polishing,
please see the attached screenshot.
I observed this problem with Chrome 83.0.4103.116 on Win7.
Is there a chance to adjust the text to be normal left-aligned instead of the crazy "block" layout?

https://www.ldraw.org/cgi-bin/ptdetail.c...861c01.dat

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Hey, first post here but I was in need of direction and thought this would be the best place to go. Please to meet you all!
For context, I'm a total newbie to working directly with LCAD, but recently as a gift for some friends of mine have started work on a series of custom figures and matching build. The figures are going to be completely custom, with unique decaling and when necessary custom hair pieces. I had just finished making the first such piece when I realized that as a part it needed multiple colors. The same way you see on some bricks that are both hat and hair for example.  I know this is possible in Ldraw but have no idea how I'd set it up. 
If it's of any importance I'm assembling the creation in stud.io, which is also the way I've been importing the mentioned decals. 
Any advice at all would be greatly appreciated.

Known issues:

- 51239 not available, 60593 as placeholder

- 51266 not available, 60602 as placeholder

- 37695 not available, 95832 as placeholder

- 30151b not available, 30151 as placeholder

- Missing prints on LEGO sets


- No rocket


- No minifigs