How to open header files in PlatformIO?

This is my first day using Platform IO and I’ve got a basic blink project up and running on ESP8266. So far so good.

I can’t figure out though how to open header files in the IDE. For example, if I #include <Arduino.h> then everything builds fine, but when I use cmd-t (on Mac) typing “Arduino.h” it doesn’t show the header. Obviously it was found at build time.


Right click on <Arduino.h> and Goto declaration...