> For the complete documentation index, see [llms.txt](https://docs.pollination.solutions/user-manual/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pollination.solutions/user-manual/revit-plugin/pollination-revit-classic/hands-on-tutorial/selecting-roofs-optional.md). # Selecting Roofs (optional) {% embed url="" %} To start selecting roofs click on the Select Roofs button.This is an optional step to remove the unnecessary roofs from being exported to snapshots. In most cases, you would only need to export the slanted roofs. By default, all the roofs are selected to be exported.
The button opens up a menu that allows you to select the roof families that should be included in the Pollination model. Like the "Select Doors & Windows" menu, you can visualize the shades in the UI before exporting them.

Select Roofs Menu

### Top Face option In some models it might make sense to use the top face in the roof geometry to make it easier to clean up the roof. Or sometimes you might want to have a geometry that looks the same as the architecture model. See this topic on Discourse. {% embed url="" %} --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## 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, and the optional `goal` query parameter: ``` GET https://docs.pollination.solutions/user-manual/revit-plugin/pollination-revit-classic/hands-on-tutorial/selecting-roofs-optional.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. 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.