diff --git a/docs/rules/periphery/p031-photo_dotdash.csv b/docs/rules/periphery/p031-photo_dotdash.csv
new file mode 100644
index 0000000..cfa8467
--- /dev/null
+++ b/docs/rules/periphery/p031-photo_dotdash.csv
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+Name,Description,Flags,Value
+(photo.1),Rules dnwell.3 and nwell.5 are exempted for photoDiode,,
+(photo.2),Min/Max width of photoDiode,,3.000
+(photo.3),Min spacing between photoDiode,,5.000
+(photo.4),Min spacing between photoDiode and deep nwell,,5.300
+(photo.5),photoDiode edges must be coincident with :drc_tag:`areaid.po`,,
+(photo.6),photoDiode must be enclosed by dnwell ring,,
+(photo.7),photoDiode must be enclosed by p+ tap ring,,
+(photo.8),Min/Max width of nwell inside photoDiode,,0.840
+(photo.9),Min/Max enclosure of nwell by photoDiode,,1.080
+(photo.10),Min/Max width of tap inside photoDiode,,0.410