In this window you can select the database for the current work section
syntax of the command:
Select extension - list box window enables two different type of database : *.txt and *.xls (Excel is required)
Select dbase - Identifies the database previously created and selects it to the current section.
Attach map - The button calls the autocad device contest. It reads (inside the database that you have selected) all contours of the maps and it draws a preview.
When you select a point inside one of these maps contours, autolisp map making software send as external reference the selected map in the current draw.
Exit - Disables all select variables for the current work section