The other two general optimizations on the Compile tab of the Project Properties dialog box are Favor Pentium Pro and Create Symbolic Debug Info. Favor Pentium Pro will cause your application to run faster on computers with Pentium Pro processors. If you select this, your application will still run on computers with other processors, but they will run a bit slower. Create Symbolic Debug Info will have the compiler create a debug file with the extension .PDB. This file can be used by external debugging tools to debug the application as it runs.