Lua libcurl

This Draw function is independent from the libcurl? Can you draw any image? Or what exactly is this function for? Can you guys please name some examples of what would you use this for?

Btw will this be drawn over videos too? Is it possible to draw an animation? Damn so many questions

downloadMemory("http://url...", function(s,code,param) 
  sprite = graphics.loadMemoryJPG(s)
-- sprite = graphics.loadMemoryPNG(s)
-- sprite = graphics.loadMemoryWEBP(s)
end)

downloadMemory("http://url...", function(s,code,param) 
  print(s) -- html
end)