# Tags Variant works on the concept of ‘tagged’ objects in a file. You can tag meshes or materials with names and use them to make meshes visible/invisible, and assign tagged materials to tagged meshes. Planning your tags carefully up-front will help reduce the time needed to create 3D models, minimize the download size for the user, and simplify adding future variants. ### How to add tags Tags are set in your preferred 3D editor, by editing the name fields of 3D objects. We show that a word is a tag by wrapping it in the special characters: “V\[ ]” For example, if you had a 3D mesh named “**armchair**” you could tag it as **CHAIR** by changing the name to: “**armchair V\[CHAIR]**”, or simply “**V\[CHAIR]**”. It doesn't matter if there's other text in the name - the only thing that matters is that our tag-name **CHAIR** appears surrounded by **V\[ ].** ![(screenshot from Blender)](/files/-MYdxSvIm_LY7oWMTcT7) Tags can only contain numbers, letters and the underscore ‘\_’ character. Tags are case insensitive, so there’s no difference between ‘Chair’ and ‘CHAIR’. However, we recommend using uppercase to make tags stand out from other text in the name field at a glance. --- # 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://docs.variant3d.com/3d-content/tags.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.