# 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. ------ Copyright (C) 2022-2023 by Zhang Tingxuan .