It's something to do with English lol
markers
markers
markers
It means "The markers."
slip markers simply means moving your marker from one needle to the another one.
It means "The markers."
5 packs of markers, or 70 markers. Which would mean 14 packs of pencils, or 70 pencils.
If you mean the American band Halestorm, their genre is Hard Rock.
Boundary line
The genre history is typically a book/movie set in the past.
A dramatic genre.
I think you might mean genus. Genre is a style or type of expression.