You can designate a region of interest (ROI) by selecting an XYZ location at a zoom level of your choice and creating a bookmark.
A bookmark is a hyperlink to the ROI that you can share with other Biolucida users.
to open the Bookmarks panel (the panel might already be open).
to open the Bookmarks panel.

The new bookmark is added to the Bookmarks panel, under the name of the
to open the Bookmarks panel (the panel might already be open).

to open the Bookmarks panel (the panel might already be open).
The URL to the bookmark is copied.Creating /editing/deleting bookmarks requires an Administrator account or a Viewer account with Maintainer/Full role (see About Biolucida users).
Also see Annotations, Organizing images