understanding android drawable folders

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Mobile

Android

Hi there,

I am new to Android development and am enjoying learning thus far.

I understand the followind drawable folders are used to store graphic images png,bitmap, jpg etc for different devices due to the differing screen size:

res/drawable-mdpi, drawable-hdpi, drawable-xhdpi, drawable-xxhdpi

However what is confusing me is that alot of online tutorials advise me to "create a drawable folder" in which I will store XML files i.e. list_selector.xml

Am I correct in assuming they want me to create the "drawable" folder in my "res" directory?

I'd be grateful if anyone could confirm

Thank you