> 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/bookmarks.md).

# Bookmarks

NeuTu uses a “bookmarking” system to mark bodies or areas of interest.  Bookmarks are point annotations that can be imported as a list or added by the user.  Bookmarks appear as red open circles in the 2D window.
 A bookmark can be added by mouse click in the 2D view (**user bookmark**) or loaded from a bookmark file (**assigned bookmark**). A user bookmark has a letter U showing on its glyph side, while an assigned bookmark is only displayed as a circle.

To place a user bookmark, the user must hit the “G” key to enter the bookmarking mode. Click on mouse to add bookmark and double-click to annotate with free form text. User bookmarks can be selected and deleted as well ('Delete' or 'X'). We can double click on a bookmark to change its annotation content. Bookmarks are classified into three types:  Merge, Split and Other.  Merge and Split bookmarks can be used to mark falsely merged bodies and falsely split bodies.  Other-type bookmarks can be used to label specific bodies for proofreading assignments. 

![](/files/-LtSdG9cidrDaiKobp4U)

Users can import an “assigned” list of bookmarks using the Bookmark button in the top left menu bar.  NeuTu also displays bookmarks and sorts them in ascending order by Z and shows the body ID and comments associated with each bookmark.  

![](/files/-LtSdUYBbmFahHzMTnyi)