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# The `fixdif` Package

The `fixdif` package provides an interface for defining the style of differential operators.

The basic commands are:

- `\d`: for differential operator "d" in math mode and under-dot accent in text;
- `\partial`: a "fixed" partial differential operator command;
- `\letdif`: an interface for defining new commands for differential operators;
- `\mathdif`: a commmand in math mode, you can use it just like `\mathop`, etc.

See `fixdif.pdf` for more. Happy TeXing!

## License

This work may be distributed and/or modified under the conditions of
the [LaTeX Project Public License](http://www.latex-project.org/lppl.txt),
either version 1.3c of this license or (at your option) any later version.

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Copyright (C) 2022-2023 by Zhang Tingxuan <alphaztx@163.com>.