Can I work on an online Ldraw program?

[Willy Tschager]

#1: have no permission

https://www.ldraw.org/docs-main/licenses...fo.html#CA

You are free:

    to copy - distribute, display, and use the CA approved LDraw Parts Library
    to make derivative works
    to make commercial use of the CA approved LDraw Parts Library

Under the following conditions:

    Attribution - You must give the original author credit.
    The LDraw Steering Committee (SteerCo) also holds an attribution to 'The LDraw Parts Library' in such Derivative Works to be sufficient in lieu of a full list of authors.

For any reuse or distribution, you must make clear to others the licence terms of this library.
Any of these conditions can be waived if you get permission from the copyright holder.
Your fair use and other rights are in no way affected by the above.

w.