> For the complete documentation index, see [llms.txt](https://enercalc.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://enercalc.com/docs/e3d-user-manual/introduction/toc161394073.md).

# License Agreement

Review the ENERCALC 3D license agreement and trademark and copyright notices in ENERCALC SEL.

OpenGL® is a registered trademark of Silicon Graphics, Inc. (SGI).

Windows® is a registered trademark of Microsoft Corporation.

ENERCALC 3D is a trademark of ENERCALC, Inc.

Copyright 2010-2020 by ENERCALC. All rights reserved.


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