How to see how much memory i'm using in a pic?

[MentalSabotage]

Hello. I use Paint Tool Sai to make some drawings and there's a small place in the corner that shows how much memory I still have to allow me to work in a specific pic. About this program, PaintStormStudio, how can I see how much I have left while i'm working in a specific drawing?

[support]

RAM, CPU, HDD: Use "ctrl+shift+esc "
To view GPU memory usage you can use a free soft called "GPU-Z"