---
title: "Built-in help - MetaEditor Help"
description: "MetaEditor features the built-in MetaQuotes Language 4 and 5 (MQL4 and MQL5) help providing complete description of all its... - Built-in help - MetaEditor Help"
image: "https://www.metatrader5.com/i/logo_metatrader5.png"
url: "https://www.metatrader5.com/en/metaeditor/help/mql5_help"
---

[MetaEditor Help](https://www.metatrader5.com/en/metaeditor/help) → Built-in help

# Built-in help

MetaEditor features the built-in MetaQuotes Language 4 and 5 (MQL4 and MQL5) help providing complete description of all its elements and constructions. The help (or MQL5 Reference) is context-based. Place the cursor over any language element in a source code and press F1 – the required documentation section will be opened immediately:

![MQL4/MQL5 context help](https://www.metatrader5.com/i/help/metaeditor/en/context_help.png)

You can also open the built-in Help using the "MQL4/MQL5 Reference" in the [Help](https://www.metatrader5.com/en/metaeditor/help/main_menu/main_menu_help) menu.

In addition to the built-in Help, MetaEditor also features the context-based search on [MQL5.community](https://www.mql5.com/). Place the cursor over any language element in a source code and press Ctrl+F1 – all detected website materials will be displayed on the [Search](https://www.metatrader5.com/en/metaeditor/help/toolbar/toolbar_search) tab of the Toolbox window.

![Context-based search on MQL5.community](https://www.metatrader5.com/i/help/metaeditor/en/online_help.png)

You can also perform a search on MQL5.community via the [Search toolbar](https://www.metatrader5.com/en/metaeditor/help/toolbar/toolbar_search) .

## In this section

- [Launch](https://www.metatrader5.com/en/metaeditor/help/beginning/open)
- [Settings](https://www.metatrader5.com/en/metaeditor/help/beginning/settings)
- [Integration with other IDEs](https://www.metatrader5.com/en/metaeditor/help/beginning/integration_ide)
- [Main menu](https://www.metatrader5.com/en/metaeditor/help/main_menu)
- [Toolbars](https://www.metatrader5.com/en/metaeditor/help/toolbar)
- [Workspace](https://www.metatrader5.com/en/metaeditor/help/workspace)
- [Projects and MQL5 Algo Forge](https://www.metatrader5.com/en/metaeditor/help/mql5storage)
- [MQL4/MQL5 Wizard](https://www.metatrader5.com/en/metaeditor/help/mql5_wizard)
- [Developing programs](https://www.metatrader5.com/en/metaeditor/help/development)
- [Working with SQL data bases](https://www.metatrader5.com/en/metaeditor/help/database)
- [Working with machine learning models](https://www.metatrader5.com/en/metaeditor/help/machine_learning)
- [Example of developing a program](https://www.metatrader5.com/en/metaeditor/help/project_example)
- [MetaEditor environment folders](https://www.metatrader5.com/en/metaeditor/help/structure)
- [MQL5.community: Community of Traders](https://www.metatrader5.com/en/metaeditor/help/mql5community)
- Built-in help
- [Articles on the development of trading applications](https://www.metatrader5.com/en/metaeditor/help/articles)
- [Trading platform video guides](https://www.metatrader5.com/en/metaeditor/help/video_guides)

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```