Type Parameter
Syntax {$E extension}
{$EXTENSION extension}
The $E
directive sets the extension of the executable file generated by the compiler.
It is often used in conjunction with the resource-only DLL mechanism.
For example, placing {$E deu} in a library module produces a DLL with a .deu extension: filename.deu. If you create a library module that simply references German forms and strings, you could use this directive to produce a DLL with the .deu extension. The startup code in the runtime library looks for a DLL whose extension matches the locale of the system -- for German settings, it looks for .deu -- and loads resources from that DLL.