Bookmarks are a useful feature for saving the current position and zoom of the canvas, to be able to come back to that part of the canvas later. This helps to manage more complicated models. To create a new bookmark, click on the ``Bookmark'' tab in the top left-hand corner (in-between ``Edit'' and ``Insert'') and select ``Bookmark this position''. The program will provide a dialogue box to enter in a name for the new bookmark. After creating the bookmark, all user-created bookmarks can be seen in the Bookmarks menu. To delete a bookmark, simply select ``Delete'' from the Bookmarks menu and select the desired bookmark. To open an existing bookmark, select one from the menu.
You may also create a bookmark from any item on the canvas by selecting the bookmark checkbox in the ``description'' dialog. This is especially useful with text boxes, since they provide a visual indicator for what is bookmarked at a given location—Parameter definitions, Plots, etc.