Documentation: Contributor Agreement

Maintained by: Steering Committee
Revision: 2022-02-23

Revision History:
2022-02-23: Added new Contributor's Agreements authorizing use of CC BY 4.0 license.

This is an ratified, official document. Non-adminstrative changes can only be made with the approval of the maintainer.

The Contributor Agreement

Contrbuter Agreement Dated 2022-02-23

By submitting work ("the Work") to The LDraw Organization (""), the submitter ("the Author"), agrees to release the Work under the Creative Commons Attribution License 4.0 International License ("CC BY 4.0").

The human readable and legal text of the CC BY 4.0 license can be found at this link:

Legacy CA

Version: 4.2 (23-Oct-04)
Note: No longer being used. Only in effect for contributers that have not agreed to the new CA. Shown here for reference purposes

By submitting work ("the Work") to The LDraw Organization (""), the submitter ("the Author"), agrees to release the Work under the Creative Commons Attribution License version 2.0 ("the CCAL").

The human readable version of the CCAL can be found at this link:

The legal text of the CCAL can be found at this link:

For the purposes of this license The Work is defined as the LDraw Parts Library (and all parts within it) and all items at the Official Model Repository (OMR)
The CCAL 2.0 will be used. The licenced items will be identified by the appearance of the following line in the file header as placed there by the LDraw Administrators or the Original Author.

0 !LICENSE Redistributable under CCAL version 2.0 : see CAreadme.txt

The Author acknowledges that, provided follows the guidelines of the CCAL, the following rights are granted to via the CCAL:

  • Non-revocable, no-cost, non-exclusive rights to distribute the Work in any form chooses
  • The right to create derivative works of the Work


The acceptable method of including attribution information in the Work will be provided by While it is The's responsibility to maintain the correct attribution on all submitted works, it is the Author's responsibility to provide with the correct attribution information. will investigate and, if necessary, correct any attribution errors if notified by the Author or other persons.

Since it may become necessary for to contact the Author regarding the Work, it is the Author's responsibility to maintain an up to date method of contact with

If it becomes necessary to change the license under which the Work is released, will make all reasonable efforts to contact the author regarding the change. No change to the license will be made without the author's permission; however, distribution of the Work by may be discontinued or the method of distribution may be altered.


To submit parts , you must be authorized as an author on the Parts Tracker and have read and affirmed the Contributor Agreement.
To become authorized as an author you must first register with the Forum (it's free) and then send an email to the Parts Library Admin (Orion Pobursky) with your true first and last names and your username. You must also include the statement "I accept the Contributor Agreement with regards to all past and future contributions I make to". A list of the current authors can be found at

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