---
title: "MetaTrader 5 Client Terminal build 306 - Mises à jour"
description: "Release Notes: Terminal: When starting the terminal with the /config key, the configuration file is opened only for reading. - Mises à jour"
image: "https://www.metatrader5.com/i/logo_metatrader5.png"
url: "https://www.metatrader5.com/fr/releasenotes/terminal/306"
---

# MetaTrader 5 Client Terminal build 306

## Release Notes: Terminal: When starting the terminal with the /config key, the configuration file is opened only for reading

13 août 2010

1. Terminal: When starting the terminal with the /config key, the configuration file is opened only for reading.
2. Terminal: Fixed scanning of access points when starting the client terminal for the first time.
3. Terminal: Fixed terminal crash during mass recompilation of MQL5 programs.
4. Terminal: Fixed drawing of Fibonacci Retracement.
5. Terminal: Fixed handling of an incorrect request in the terminal log viewing dialog.
6. Tester: Added defragmentation of files of the history database.
7. Tester: Fixed drawing of the chart of of testing results.
8. MQL5: Fixed and optimized work with the trading history - removed conflicts with the parallel work of several Expert Advisors and their influence on the "History" tab of the toolbar.
9. MQL5: Changed behavior of some functions: [PositionSelect](https://www.mql5.com/en/docs/trading/positionselect), [OrderSelect](https://www.mql5.com/en/docs/trading/orderselect), [HistoryOrderSelect](https://www.mql5.com/en/docs/trading/historyorderselect) and [HistoryDealSelect](https://www.mql5.com/en/docs/trading/historydealselect) - removed timeout when the requested data are not available. If the required data are not available, false is returned immediately.
10. MQL5: Optimized and greatly accelerated [string operations](https://www.mql5.com/en/docs/strings).
11. MQL5: Fixed terminal crash when aborting debugging in the 64-bit version.
12. MQL5: Fixed optimization of inline calls.
13. Fixed errors reported on the forum and in crash logs.

**Reporter aux nouvelles précédentes :**

- [MetaTrader 5 Client Terminal build 305](https://www.metatrader5.com/fr/releasenotes/terminal/305)
- [MetaTrader 5 Client Terminal build 302](https://www.metatrader5.com/fr/releasenotes/terminal/302)
- [MetaTrader 5 Client Terminal build 299](https://www.metatrader5.com/fr/releasenotes/terminal/299)
- [MetaTrader 5 Client Terminal build 298](https://www.metatrader5.com/fr/releasenotes/terminal/298)
- [MetaTrader 5 Client Terminal build 294](https://www.metatrader5.com/fr/releasenotes/terminal/294)