What are track markers in Short Track Speed Skating?

Section 3: Playing Area

Lap distance: 111.12 m (364.6 ft) per lap, measured at the innermost edge of the track.
Rink size: Standard ice hockey rink: 60 m × 30 m (197 ft × 98 ft). The track is marked within this rink surface.
Corner radius: 8 m (26.2 ft) at the apex of each corner.
Track width: Minimum 7 m (23 ft) across the straightaways, providing room for pack racing and overtaking.
Direction: All racing is counterclockwise.

Apex blocks: Rubber block markers placed at each corner to define the inner boundary of the track. Skaters may not cross inside the apex blocks (cutting the corner results in a penalty). The blocks are designed to dislodge on contact to prevent tripping.
Track lines: The track boundaries are not painted on the ice (unlike long track). Only the rubber apex blocks and finish line are physical markers. This is a distinctive feature of short track racing.
Finish line: A painted line across the ice at the start/finish location. Photo-finish camera aligned with this line.

Perimeter padding: Safety mats (crash pads) around the entire rink perimeter, minimum 60 cm (24 in) thick. The padding must extend above the board height to protect against over-the-boards crashes.
Board openings: All gates and openings in the boards must be padded and flush with the boarding surface during competition.
Camera positions: Overhead camera, corner cameras, and finish-line camera positions must not protrude into the safety padding zone.

Lap distance: 111.12 m (364.6 ft) per lap, measured at the innermost edge of the track.
Rink size: Standard ice hockey rink: 60 m × 30 m (197 ft × 98 ft). The track is marked within this rink surface.
Corner radius: 8 m (26.2 ft) at the apex of each corner.
Track width: Minimum 7 m (23 ft) across the straightaways, providing room for pack racing and overtaking.
Direction: All racing is counterclockwise.

Apex blocks: Rubber block markers placed at each corner to define the inner boundary of the track. Skaters may not cross inside the apex blocks (cutting the corner results in a penalty). The blocks are designed to dislodge on contact to prevent tripping.
Track lines: The track boundaries are not painted on the ice (unlike long track). Only the rubber apex blocks and finish line are physical markers. This is a distinctive feature of short track racing.
Finish line: A painted line across the ice at the start/finish location. Photo-finish camera aligned with this line.

Perimeter padding: Safety mats (crash pads) around the entire rink perimeter, minimum 60 cm (24 in) thick. The padding must extend above the board height to protect against over-the-boards crashes.
Board openings: All gates and openings in the boards must be padded and flush with the boarding surface during competition.
Camera positions: Overhead camera, corner cameras, and finish-line camera positions must not protrude into the safety padding zone.