Why do I have transparent walls in my project?

[e_richaud]

I am new with Sketchup and while working on my first project suddenly I click on something and turned all my walls in a transparent way.

I have no clue how did I do it but can you please help me out to get back on track? I want my walls no transparent again

Thanks in advance

[Box]

Tap k on your keyboard.

[john_mcclenahan]

By way of explanation of Box’s reply. k is the shortcut for View/Edge Style/Back Edges - it toggles them on and off.

[DaveR]

Someone should 3D print a key cover to go over the K so that new users can’t hit it until they take the time to learn about the keyboard shortcuts and what they do.

[Anssi]

@DaveR

Someone should 3D print a key cover to go over the K

I would love to put one on top of my CapsLock key…