> For the complete documentation index, see [llms.txt](https://trylevel2.gitbook.io/getting-started/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://trylevel2.gitbook.io/getting-started/technical/data-block-guide.md).

# Data block guide

This guide will help you understand which Block accepts which data type

### Snapshot <a href="#h_21d56e3697" id="h_21d56e3697"></a>

\*\**Price Data is a special block that comes into the data category, however, does not accept any input nor it throws any output.*\
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*Price Data can be considered as the starting point of the strategy that takes into account the price when back test or forward test is run.*\
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*If you'd like to use real time price in your strategy then consider using the Current Price Block.*

*\*\*Action block does not give any output to the users. Instead, when running in background, it instructs our services when to place an order with other meta-data (stop loss, take profit)*