While it provides few examples, in my case it's not enough at all. Few things I'm interested in (Kindly relate to all sub-questions in your answer):

1. As an example, How can I look at the inner implementation of: M5Textarea? I would like to see which parameters each function takes, which of them are optional, how it's implemented (so I can write something similar) etc...

2. I want to write a new class deriving from Element Base Class: M5Obj How can I do that without knowing how the base class is implemented?

3. Where can I find the full list of Objects? From my experience I've discovered few which aren't mentioned in that page at all. For example, I want to see how can I draw a graph.

4. I found the following function which draws rectangle on the screen:

temp = lcd.triangle(19, 10, 300, 40, 90, 200, color=0xcc0000)

which doesn't return anything, ie temp is a NoneType Object, In this case how can I delete that rectangle? as I don't have a reference to M5Obj Object I can't write temp.delete()

Note: I can't just color the whole display in white as there could be complex elements in the background.