CMSIS EXTI project example

Hi to all..
I've just moved to ARM Cortex from Microchip PIC.. I was there for too long. (since 1996). I bought lots of dev-board ranging from Waveshare Open Series to STM32Discovery and even a Freescale Freedom too. But I will concentrate on M3 for a start. So far I manage to do GPIO with LEDs and polling on switches.

I try to make it interrupt driven. My question is, would there be someone kind enough to share their simple project to use CMSIS EXTI, which is manageable by uVision5 'Manage Run-Time Environment'. It's been confusing to me since there seems to be a lot of 'Old' sample projects I found on the net. But I really like to start with the industrial standard, CMSIS. By the way I am using Keil MDK-ARM, uVision 5.10 lite version.

Thanks in advanced.

Sam