> 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/model-editor/commands/by-use-case/category_0/subcategory_4.md).
# Line
Below are the commands that generate lines/polylines from rooms.
## Create boundary
Create polyline boundaries around a selection of rooms. The command can return polylines for either the exterior border around the rooms or just the holes (or both).
Options
**Mode**
The calculation mode for creating boundaries. The options are Include Holes, Exclude Holes , and Holes Only
**Merge Distance**
The maximum distance between rooms below which the boundary will be drawn around the rooms together (instead of being separate for each room). Setting a non-zero value here will allow you to draw boundaries around rooms that have gaps in between them (crossing gaps up to the specified distance)
***
## Generate alignment axes
Generate suggested alignment axes for rooms using a selected line to specify the alignment direction. All generated axes will be parallel to the selected line and will fall along the common axes of the selected rooms.
Options
**Distance**
The distance with which room vertices will be aligned to common axes. This dictates the resolution with which common axes will be generated
**All Common Axes**
Select to have this command output all common axes of the rooms regardless of whether the rooms are already aligned to the axes. By default, only common axes to which the rooms are not already aligned are output
***
---
# 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/model-editor/commands/by-use-case/category_0/subcategory_4.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.