Markers
Markers are part of the board definition and are drawn under pieces. Use them for dots, shading, edges, fences, flood fill, outlines, lines, and labels.
Dots
Example games: Advanced Slither, Akron
Shading
Example games: Ataxx, Alien City
Edges and fences
Example games: Blockade, Conect
Flood fill
Outlines and lines
Glyph markers
Embed legend glyphs directly on the board:
Example games: Majorities, Sentinel
Labels
Example games: Phutball, Emu Ranchers