> For the complete documentation index, see [llms.txt](https://astro-rpa.gitbook.io/astro-rpa-user-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://astro-rpa.gitbook.io/astro-rpa-user-guide/g_elements/el_basic/flow_control/el_logic_while.md).

# While

![](https://1755238209-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FNnEkyZmLMSWTDXxpygbG%2Fuploads%2Fgit-blob-16fe17ef234f0a75f66653bd0d591d691075f801%2Fimage%20\(56\).png?alt=media)

Component-cycle that continues until the expression set in it returns the Truth (at the end of the cycle)

![](https://1755238209-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FNnEkyZmLMSWTDXxpygbG%2Fuploads%2Fgit-blob-9f7e9bdcd2228b1929b8174801ee034b0d3983c4%2F1%20\(125\).png?alt=media)

Properties

\- Expression\*: \[Boolean] Expression the truth of which is checked before each iteration of the cycle