You can buy vertical file cabinets online or at office supply store. This site offers vertical cabinets http://www.justfilingcabinets.com/Vertical-Filing-Cabinets-C21368.html
It is the vertical groove in the upper lip,
A "file" in chess is a vertical column of squares on the chessboard.
Vertical files
Yes. File cabinets are widely available at any Home depot location, or on their website. They have both lateral and vertical file cabinets, with however many drawers you need.
A vertical file cabinet can be bought at office supply stores, furniture stores, or through online retailers such as Amazon or Walmart. It's recommended to check multiple sources to compare prices and options before making a purchase.
NFTS
attached please find the file ICT departmental meeting slide for your reference
the slope is infinite because you have a vertical line. To find a parallel line, the formula would be "x= any number" because that would also give you a vertical line.
There are a number of places where one can purchase vertical file cabinets. Some examples include Staples, eBay, Cymax, Overstock, Amazon and Office Max.
A vertical file :)
Presidential Commission on Values Formation.Popular Culture Vertical File.