To edit an existing database, choose "Edit DataBase" from the File menu. A new DataBase menu will appear.
To create a new database, choose "New..." from the File menu and the DataBase menu will appear automatically. You will be asked to name the topmost area of the database. You will then need to create the overlays for that area. Follow the instructions given below for "Create Overlay...."
Choosing "Edit Root Area..." from the DataBase menu allows you to change the name of the topmost area of the database. You will only be able to choose this when you are at the topmost area.
Choosing "Create Subarea..." allows you to name and define the border of a new subarea within the current area. Give the new subarea a name, and click "Define Area." You will get a new cursor. Define a polygon bounding the new subarea by clicking the mouse at each vertex of the polygon. Double click when you are done defining the subarea. To add overlays to the new subarea, zoom into it (it will be blank), and follow the instructions given below for the "Create Overlay..." feature.
Choose "Edit Subarea..." to change the name or border of the selected subarea. Click "Define Area" to redefine the border, or "Use Same Area" to use the existing border after changing its name.
Choose "Delete Subarea..." to delete the selected subarea, along with all its overlays. This will delete all subareas (and their overlays) below the selected subarea as well. You will be asked to confirm the deletion.
To add a new overlay to the area currently displayed, choose "Create Overlay...." You will be asked to select a MacPaint document containing the overlay's image. You will then be able to name the overlay, specify it as "Default" or not, and specify links for the overlay. A default overlay is usually an important overlay; without it an area would be somewhat meaningless. An example of this would be an outline map in a geographic atlas. The default overlays of the topmost area are those which appear when the database is first opened. "Links" allow you to connect an overlay to one or more overlays in the area above the current one. Linking is what allows the same "set" of overlays to be displayed after a zoom: the set of overlays you see after zooming are those which are linked to the set displayed before zooming. Because overlays are linked to overlays in the area above, you will not be able to specify links for overlays at the topmost level.
"Edit Overlay..." allows you to edit any of the parameters you specified when creating an overlay. After choosing it, you will be asked to choose the overlay you wish to edit. You may then change the overlay's name, default state, and links. You may also specify that a new image be used for the overlay by checking the "Use a new image" box. When you do so, you will be prompted to choose a new image file.
Choose "Delete Overlay..." to get rid of an overlay you no longer want. You will be asked to choose the overlay to delete, and then to confirm the deletion. All links to that overlay will be broken.
