# CTAN update: nicematrix

Possibility to draw horizontal dotted lines to separate rows with the command \hdottedline (similar to the classical command \hline and the command \hdashline of arydshln). Possibility to draw vertical dotted lines to separate columns with the specifier ":" in the preamble (similar to the classical specifier "|" and the specifier ":" of arydshln). It's possible to replace ":" by another letter with the option "letter-for-dotted-lines". This version is not strictly compatible with the previous ones since this new version will, be default, replace some vertical lines drawn by arydshln with lines drawn by nicematrix. However, an instruction \NiceMatrixOptions{letter-for-dotted-lines=V} will restore the previous behaviour.

This package is located at http://mirror.ctan.org/macros/latex/contrib/nicematrix More information is at https://www.ctan.org/pkg/nicematrix

Thanks for the upload. For the CTAN Team Erik Braun

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## nicematrix – Improve the typesetting of mathematical matrices with TikZ

This package provides new environments similar to the environments
`matrix`, `pmatrix`, `bmatrix`, etc.
of amsmath and mathtools.

In these new environments, a TikZ node is created for each cell of the matrix.

The user can use these nodes directly but `nicematrix`
also provides commands which use these nodes to draw continuous
dotted lines from two cells of the matrix (the result is more
aesthetic than the classical result obtained using
`\cdots`, `\vdots`, `\ddots`, etc.).

This package also provides a control over the width of the columns and the possibility to add an exterior line and an exterior column.

`nicematrix` requires and loads
amsmath,
array,
expl3,
l3keys2e,
xparse,
tikz,
as well as the TikZ library `fit`.

Package | nicematrix |

Version | 3.11 2020-02-07 |

Copyright | 2017–2020 F. Pantigny |

Maintainer | François Pantigny |