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Quick links:
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<a class="quicklink" href="../reference-main-flag-list/index.html">Flags</a>
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<a class="quicklink" href="../reference-verbs/index.html">Verbs</a>
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<a class="quicklink" href="../reference-dsl-builtin-functions/index.html">Functions</a>
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<a class="quicklink" href="../glossary/index.html">Glossary</a>
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<a class="quicklink" href="../release-docs/index.html">Release docs</a>
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# Miller environment variables

The following environment variables affect how Miller works:

* `MLRRC`: see [Customization](customization.md).
* `MLR_NO_COLOR`, `MLR_ALWAYS_COLOR`, `MLR_KEY_COLOR`, `MLR_VALUE_COLOR`, `MLR_PASS_COLOR`, `MLR_FAIL_COLOR`, `MLR_REPL_PS1_COLOR`, `MLR_REPL_PS2_COLOR`, `MLR_HELP_COLOR`: see [Output Colorization](output-colorization.md).
* `MLR_REPL_PS1`, `MLR_REPL_PS2`: see [REPL](repl.md).

