Autocad - All Most important Drawing Commands. (Tutorial for beginners in 30 minutes)

Hi sir im just new in autocad but pls can you tell me what are the x i saw in autocad elevation?

Example there's a cabinet and there's a x inside like this ❎
Its that mean open?
But sometimes i also see like this - - - - - - - in X sign!
Pls tell me what's that and how to do in autocad

One video give plan,section,elevation full video explained sir step by step process

Thanks for sharing..I've already learned Autocad since 2019..
But now I'm learning Autocad from your video 1 and all videos. I make my practice watching your video..
I also learn Revit also.. It's so easy to understand.. Thanks u so much..❤

Your lessons are very informative, clear and easy to follow.
Thank you for all your great videos.

Thanks mate that was super helpful

Thanks, my first time. Like it.