Debug | Resolve Unqualified Symbols
Select Resolve Unqualified Symbols on the Debug menu to resolve symbols that have no module prefix.
If you clear Resolve Unqualified Symbols, the debugger cannot resolve symbols that have no module prefix. If you do not select Resolve Unqualified Symbols and a variable that has no prefix is not already loaded, the debugger does not load any additional symbols to resolve it. You can still use unqualified symbols when this option is clear, but only if they have been previously loaded.
Although we always recommend that you use module qualifiers, you can clear the Resolve Unqualified Symbols option to avoid loading symbols that resolve incorrect or misspelled symbols when module qualifiers are not used.
For more information about symbols, loading symbols, and verifying symbols, see Symbols.