prometheus/docs/disabled_features.md

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---
title: Disabled Features
sort_rank: 10
---
# Disabled Features
Here is a list of features that are disabled by default since they are breaking changes or are considered experimental.
Their behaviour can change in future releases which will be communicated via the [release changelog](https://github.com/prometheus/prometheus/blob/master/CHANGELOG.md).
You can enable them using the `--enable-feature` flag with a comma separated list of features.
They may be enabled by default in future versions.
## `@` Modifier in PromQL
`--enable-feature=promql-at-modifier`
The `@` modifier lets you specify the evaluation time for instant vector selectors,
range vector selectors, and subqueries. More details can be found [here](querying/basics.md#-modifier).
## Remote Write Receiver
`--enable-feature=remote-write-receiver`
The remote write receiver allows Prometheus to accept remote write requests from other Prometheus servers. More details can be found [here](storage.md#overview).