E.memoryArea not working on ESP8266 (due to char-iterator ?)

I think E.memoryArea is only in recent builds, so won't be in the reference (generally the reference matches the latest 'stable' version).

The idea is that you can put strings/arrays into flash, and can even execute code direct from it - I think this was something you'd actually asked for at some point?

Potential uses:

• On Pico - storing keys/certificates for TLS
  
• Storing modules (still not quite sure why you'd want this)
  
• Storing things like Waveform or Bitmap data
  
• You can even define a function and put its contents into flash