Sebastian Ørsted submitted an update to the
SemanTeX
package.
Version number: 0.513 2021-08-23 License type: lppl1.3c
Summary description: Semantic, keyval-based mathematics
Announcement text: ----------------------------------------------------------------------
A few internal changes that make some things behave in a more natural way, though few people will realize the difference. Apart from that, a few keys are being added: pre <something> put left={...} and post <something> put right={...}, where <something> ranges over arg, upper, lower, upper left, and lower left. ----------------------------------------------------------------------
This package is located at https://mirrors.ctan.org/macros/latex/contrib/semantex
More information is at https://www.ctan.org/pkg/SemanTeX
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Thanks for the upload.
For the CTAN Team Ina Dau