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Updates to the Theory Manual between March 26, 2024 and March 8, 2025  
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We describe in the following how the DRAFT Theory Manual has changed since the last DRAFT manual. We categorize the changes into New and Error Fixes and Clarifications. We exclude typo fixes and prosaic rearrangements from this document.

New
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Error Fixes and Clarifications
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7.2.3 Updating the Body Coordinate Unit Vectors: Rewrote this section based on the current method. The previous discussion was long outdated.

23.18 Material Model 18: Power Law Isotropic Plasticity: Made the section on SIGY match the Materials Manual

30.21 Edge-to-Edge Contact: Rewrote this section because it had a lot of errors.