What's on the wall today?

I think we need 'alp.

“Hi. I'm a skyline.”
“Hi. I'm the top-line.”
“Hey mate. You've overlapped a bit—haven't you?”
“Whoops! sorry.”
“You keeping up back there?”
“I'm behind you all the way.”

“What's that up there?”
“A skyline.”
“I can see a snow-line.”
“Where?”
“What are we?”
“We're a tree-line mate.”
“So what are all those lines?”
“They're outlines.”
“Anyone know what this plumb-line's doing here?”
“Nope.”
“Hi snowy. Just dropped down to see you.”

— MING, 2009-09-18. A ‘Line’ cartoon.