English: Regular octagonal tile with eight equal-length sides and four paths linking the eight sides. The file name describes the paths as follows:
"Octiles abcdPQ-RS-TU-VW", where
abcd refers to the adjacency of the paths connecting sides
a is the number of paths with adjacency 3 (i.e., the sides linked by these paths have three adjacent sides in between; for the case of the regular octagon, this means the path links opposite sides)
b is the number of paths with adjacency 2
c is the number of paths with adjacency 1
d is the number of paths with adjacency 0
PQ-RS-TU-VW refers to the specific rotational configuration of the tile displayed. PQ are a linked pair, as are RS, TU, and VW. Sides are numbered from the bottom edge, proceeding sequentially anti-clockwise.
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