> For the complete documentation index, see [llms.txt](https://help.qonic.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.qonic.com/documentation/qonic-application/modelling/modifying.md).

# Modifying

- [Transform](https://help.qonic.com/documentation/qonic-application/modelling/modifying/transform.md): Move, rotate and copy parts freely in any direction, optionally retaining connections with adjacent building elements. Move and rotate faces freely in any direction.
- [Mirror](https://help.qonic.com/documentation/qonic-application/modelling/modifying/mirror.md): Mirror parts about a mirror plane.
- [Align](https://help.qonic.com/documentation/qonic-application/modelling/modifying/align.md): Align parts, bodies or faces by making selected faces coincide with a target surface.
- [Slice](https://help.qonic.com/documentation/qonic-application/modelling/modifying/slice.md): Slice a selection set by one or more surfaces.
- [Union](https://help.qonic.com/documentation/qonic-application/modelling/modifying/union.md): Union the geometry of two or more bodies together in one body.
- [Subtract](https://help.qonic.com/documentation/qonic-application/modelling/modifying/subtract.md): Subtract the geometry of one selection set from another.
- [Push/Pull](https://help.qonic.com/documentation/qonic-application/modelling/modifying/push-pull.md): Modify existing geometry by push/pulling its faces
- [Material Layer Editing](https://help.qonic.com/documentation/qonic-application/modelling/modifying/material-layer-editing.md): Edit the material layers of walls, slabs and roofs: split them into layers, strip or replace layers, add new layers and flip the layer order.
- [Connect](https://help.qonic.com/documentation/qonic-application/modelling/modifying/connect.md): Connect planar building elements such as walls, slabs and roofs.
- [Stretch](https://help.qonic.com/documentation/qonic-application/modelling/modifying/stretch.md): Use the manipulator to resize doors and windows.
- [Assembly Editing](https://help.qonic.com/documentation/qonic-application/modelling/modifying/assembly-editing.md): Manually adjust hierarchical relations between parts by creating and dissolving assemblies, or by adding and removing parts to and from assemblies.
- [Copy, Paste & Replace](https://help.qonic.com/documentation/qonic-application/modelling/modifying/copy-paste-and-replace.md): Copy products to the clipboard, paste them in any model, replace windows or doors with a copy, and copy details from one window or door to others.