User`s manual

Working with design libraries
ModelSim Xilinx User’s Manual Design Libraries 2-29
You can also delete an architecture without deleting its associated entity. Just
select the desired architecture name and click Delete. You are prompted for
confirmation before any design unit is actually deleted.
Assigning a logical name to a design library
VHDL uses logical library names that can be mapped to ModelSim library
directories. By default, ModelSim can find libraries in your current directory
(assuming they have the right name), but for it to find libraries located elsewhere,
you need to map a logical library name to the pathname of the library.
You can use the graphic interface, a command or the project file to assign a logical
name to a design library.
Library mappings with the GUI
To associate a logical name with a library, you select the Design > Browse
Libraries command. This brings up a dialog box that allows you to view, add,
edit, and delete mappings, as shown below: