Test all the 'overflow' property values except 'inherit' on the 'marker' element.
Each column tests a value of the 'overflow' property. The first row uses the 'marker' property to set the same marker on start-, mid- and end-points on the path. The second row uses 'marker-start', 'marker-mid' and 'marker-end' to give each point its own marker. The third row uses the 'marker' property like the first row, but here the marker has orient="auto" set.
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The test has passed if: The columns labeled 'visible' and 'auto' show markers without clipping them. All other columns show clipped markers. The rendered picture matches the reference image, except for possible variations in the labelling text (per CSS2 rules).