Answer:
ethics, epistemology and metaphysics I believe
Hi!! Is this a question or just a statement? Sorry, I can answer it in the comments if it's a question but I don't really know if it is !! sorry :D
The answer is <span>Interpretation
When creating an artwork, artists often put his emotion, principles, or pollitical value into his artwork and does not give any information about it for the audience. When the audiences see the artwork, they would combined the artform that they see with their own emotion/principles which lead to the personal interpretation on what the artists actually want to convey.
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I'm going to assume you mean drawing software, so,
It's called the lasso, or selector.
Light is the way you see a piece of art. You could see it in a negative or positive light similar to English "Connotations" It's important to see a picture from different light angles because you could see something in one that you didn't in another.
Hope this helps!