> For the complete documentation index, see [llms.txt](https://janelia-flyem.gitbook.io/neutu/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://janelia-flyem.gitbook.io/neutu/annotation/synapse-annotation.md).

# Synapse Annotation

![Synapse Glyphs](/files/-Lz9MBoV8vZBkG-oLB4P)

## Select a synapse

Click to select a synapse.

Ctrl/Cmd + Click to select more synapses or unselect a selected synapse

## Annotate/Edit synapses

### Annotate pre-synapses

Choose ‘Add Tbar’ from the tool menu or right click menu.
 

Click where you would like to place a pre-synapse glyph.

### Annotate post-synapse (also called PSD)

Choose the pre-synapse which you would like to link to PSDs.
 

Choose ‘Add PSD’ from the tool menu or right click menu.
 

Click where you would like to place a post-synapse. PSD will be automatically linked to the pre-synapse selected.

![Synapse Toolbar](/files/-Lz9Mdzk2qKb38ZckxVP)

### Delete a pre- or post-synapse

Select the pre/post synapse, and choose ‘Delete Synapse’ from the tool menu or right click menu, or press ‘X’ as a short cut key.

### Move a pre- or post-synapse

Select the pre/post synapse, and choose ‘Move Synapse’ from the tool menu or right click menu, or press ‘V’ as a short cut key.

### Manage the confidence and annotation

Double click the synapse. Window pops up to manage the confidence level (High or low/unsure) and annotations (add comment here).

![](/files/-Lz9QnBTfrEyqr9uVXiR)


---

# 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://janelia-flyem.gitbook.io/neutu/annotation/synapse-annotation.md?ask=<question>&goal=<endgoal>
```

`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.