| Front End Extensions | |
The Front End allows you to call external functions.
These functions are dynamically loaded by the front end when needed; they are within a DLL (Dynamic Linked Library under Windows™ systems), so (Shared Object under Linux™), or dyLib (Dynamic Library under Mac Os X).
This allows you to create your own extensions and use them from your 4GL code. The parameters are sent to the front end, and a stack is used to transmit in and out parameters to the extension.