# Menu bars and drop-down

There are two menu bars (horizontal and vertical) on the main proofreading window. The horizontal menu bar contains buttons to perform the following actions:

* Import bookmarks
* Toggle on/off segmentation
* Toggle on/off synapse annotation
* Open Sequencer (see section XX for how to use sequencer)

The vertical menu bar or synapse bar contains tools for synapse annotation and is described in [another section](https://janelia-flyem.gitbook.io/neutu/annotation/synapse-annotation#how-to-annotate-edit-synapses).  

![](https://2926737796-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-Ld57Fj27nUB-NnjPb7c%2F-LzDZPJSVtdJt2tdVVQM%2F-LzD_6rcrwhy7eIG287b%2Fimage.png?alt=media\&token=338caa9e-8405-4650-9970-d6c947025fb2)

There is a drop-down menu on the Visualization/proofreading tool panel. After selecting a database, users can quickly navigate to a location in x-y-z or body ID of interest by using the dropdown menu located in the Visualization & Proofreading Tool Panel.  Users can also select a Color Map (described in section Color maps).  

![](https://2926737796-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-Ld57Fj27nUB-NnjPb7c%2F-Lz9c5CyfCtSgPib87HH%2F-Lz9cxyk9rXBLcx78zhF%2Fimage.png?alt=media\&token=22155065-7481-4b30-b3bd-9b0afd8a7916)