#471 Metal slits are not rightly recognized in the DRC/LVS Issue created by EngGhaith Hi I have this simple test case, and it seems that LVS is not working correctly: KLayout: [Image](https://private-user-images.githubusercontent.com/178785944/440173639-de119996-fe22-4263-a77e-882ded63e58a.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmF3LmdpdGh1YnVzZXJjb250ZW50LmNvbSIsImtleSI6ImtleTUiLCJleHAiOjE3NDY3MDg4MzMsIm5iZiI6MTc0NjcwODUzMywicGF0aCI6Ii8xNzg3ODU5NDQvNDQwMTczNjM5LWRlMTE5OTk2LWZlMjItNDI2My1hNzdlLTg4MmRlZDYzZTU4YS5wbmc_WC1BbXotQWxnb3JpdGhtPUFXUzQtSE1BQy1TSEEyNTYmWC1BbXotQ3JlZGVudGlhbD1BS0lBVkNPRFlMU0E1M1BRSzRaQSUyRjIwMjUwNTA4JTJGdXMtZWFzdC0xJTJGczMlMkZhd3M0X3JlcXVlc3QmWC1BbXotRGF0ZT0yMDI1MDUwOFQxMjQ4NTNaJlgtQW16LUV4cGlyZXM9MzAwJlgtQW16LVNpZ25hdHVyZT05YzkyOGNkZWYzNGUzZmVlYzIzNmMyNDQ4YjY2ZTllNTA2YTYxYTkzNDZlZTI5ODNkMjY5M2MwZjdjODgxY2ZmJlgtQW16LVNpZ25lZEhlYWRlcnM9aG9zdCJ9.OwTYfnCIJH8W5713ZPgZ-mC8iK9nJlmWelq_JVvVsgg) Xschem: [Image](https://private-user-images.githubusercontent.com/178785944/440173808-74e43199-ee66-45a1-a670-a71c7792ba24.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmF3LmdpdGh1YnVzZXJjb250ZW50LmNvbSIsImtleSI6ImtleTUiLCJleHAiOjE3NDY3MDg4MzMsIm5iZiI6MTc0NjcwODUzMywicGF0aCI6Ii8xNzg3ODU5NDQvNDQwMTczODA4LTc0ZTQzMTk5LWVlNjYtNDVhMS1hNjcwLWE3MWM3NzkyYmEyNC5wbmc_WC1BbXotQWxnb3JpdGhtPUFXUzQtSE1BQy1TSEEyNTYmWC1BbXotQ3JlZGVudGlhbD1BS0lBVkNPRFlMU0E1M1BRSzRaQSUyRjIwMjUwNTA4JTJGdXMtZWFzdC0xJTJGczMlMkZhd3M0X3JlcXVlc3QmWC1BbXotRGF0ZT0yMDI1MDUwOFQxMjQ4NTNaJlgtQW16LUV4cGlyZXM9MzAwJlgtQW16LVNpZ25hdHVyZT0zYTVkODNmMDlmNmQyODM0NjNhNDdjODc5M2FkNzU3MGYzMzhiNmQ4MmQ3YzI1OTk4MTY4OTI3NzVlMTAyOTkxJlgtQW16LVNpZ25lZEhlYWRlcnM9aG9zdCJ9.kp0Ztw8iwttHGDSK1YM2_DgEVfckOD-ebaPu5gGxN3I) The LVS should throw an error, because the bottom plate of MIM on M5 should not be connected to the label on the left side of the slit. However LVS is clean: [Image](https://private-user-images.githubusercontent.com/178785944/440173872-fee4a4dd-2dbd-438c-88a6-d0fd286492ac.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmF3LmdpdGh1YnVzZXJjb250ZW50LmNvbSIsImtleSI6ImtleTUiLCJleHAiOjE3NDY3MDg4MzMsIm5iZiI6MTc0NjcwODUzMywicGF0aCI6Ii8xNzg3ODU5NDQvNDQwMTczODcyLWZlZTRhNGRkLTJkYmQtNDM4Yy04OGE2LWQwZmQyODY0OTJhYy5wbmc_WC1BbXotQWxnb3JpdGhtPUFXUzQtSE1BQy1TSEEyNTYmWC1BbXotQ3JlZGVudGlhbD1BS0lBVkNPRFlMU0E1M1BRSzRaQSUyRjIwMjUwNTA4JTJGdXMtZWFzdC0xJTJGczMlMkZhd3M0X3JlcXVlc3QmWC1BbXotRGF0ZT0yMDI1MDUwOFQxMjQ4NTNaJlgtQW16LUV4cGlyZXM9MzAwJlgtQW16LVNpZ25hdHVyZT1mMDcwYmU4ZGJhMTFiNzJiZWU1ZGM4YWE5MGM0NjljNzVjZGFmOTA1NTQyYWQ4ZjcwMDZmYzc2MmFlNzM0NmIwJlgtQW16LVNpZ25lZEhlYWRlcnM9aG9zdCJ9.YE5dqnQ2uThCu10PRL1Kr8xdorfsTP1xhfUGXAxmkxo) That means that the slit is not really excluded from M5 during LVS check. Another example for DRC: [Image](https://private-user-images.githubusercontent.com/178785944/440174044-44611611-df5d-41e2-bf9a-033bacf1af92.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmF3LmdpdGh1YnVzZXJjb250ZW50LmNvbSIsImtleSI6ImtleTUiLCJleHAiOjE3NDY3MDg4MzMsIm5iZiI6MTc0NjcwODUzMywicGF0aCI6Ii8xNzg3ODU5NDQvNDQwMTc0MDQ0LTQ0NjExNjExLWRmNWQtNDFlMi1iZjlhLTAzM2JhY2YxYWY5Mi5wbmc_WC1BbXotQWxnb3JpdGhtPUFXUzQtSE1BQy1TSEEyNTYmWC1BbXotQ3JlZGVudGlhbD1BS0lBVkNPRFlMU0E1M1BRSzRaQSUyRjIwMjUwNTA4JTJGdXMtZWFzdC0xJTJGczMlMkZhd3M0X3JlcXVlc3QmWC1BbXotRGF0ZT0yMDI1MDUwOFQxMjQ4NTNaJlgtQW16LUV4cGlyZXM9MzAwJlgtQW16LVNpZ25hdHVyZT00ZGYyODA4ODAxMTMzNWEwYjBmMzRiNDJjYzEzM2UyYjI1NzYzMjBiOWI2MTdlNzBiYjhmMzgxZDBjNDc2ODhmJlgtQW16LVNpZ25lZEhlYWRlcnM9aG9zdCJ9.LTTZL6M0WzVCpJEVlUMMtuiAKf4geEJ3fHv7npM_ql4) Slit is not recognized and therefore an error M3.b is thrown. Files are here: TEST_SLIT.zip Thank you very much. Ghaith. IHP-GmbH/IHP-Open-PDK