# Running a backtest

After selecting the backtesting type and all settings, a user can start backtesting by pressing F5 or clicking on the![](/files/-MgF4S8nPba5Gi-8aCFR)button on the top menu. A button for stopping backtesting![](/files/-MgF4S8rA1xoy0tO_UUg) is also available from the top menu of EvoCode.

A user can also select speed of the backtesting in the Visualize mode by the following slider: ![](/files/-MgF4S8t-Ed4Rt8_oBo_).

It is easy to set up a Script input by clicking on the![](/files/-MgF4S8vyzICOTDZx8gz) button and selecting the desired instrument from the lookup.

![](/files/-MgF4S8ywTf5sVb3-US_)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://help.za.velocitytrade.com/evocode/backtesting-panel/running-a-backtest.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
