# Linework Lines and arcs included in families are imported into Revit. To control their appearance, assign a subcategory to the curves that matches one of the subcategories available in the Revit family template. {% hint style="info" %} For example, assigning the subcategory \ will display the curves using that style inside Revit. {% endhint %} --- # 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://wiki.mksdtech.com/beam/beam-for-rhinoceros/linework.md?ask= ``` 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.