> 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)