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[SOLVED] Metal layers abbreviation

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Hi all
Can someone explain me this metal layers abbreviation: 1P13M_1X1Xa1Ya5Y2Yy2Z
While setting the rules path in calibre, we come across this folder. I just want to know what it means and how do we know which folder to select for running DRC/LVS/PEX
 

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It is named metal stack. It is described in foundry DRM (design rule manual) doc.
1P13M - 1 poly, 13 metal layers.
1X, 2Yy ... - they have different metal thickness, min widths and min spacings.
Before starting your design you should define the metal stack, that you will use. (it may come from hard IP PHY that you have bought)
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It is named metal stack. It is described in foundry DRM (design rule manual) doc.
1P13M - 1 poly, 13 metal layers.
1X, 2Yy ... - they have different metal thickness, min widths and min spacings.
Before starting your design you should define the metal stack, that you will use. (it may come from hard IP PHY that you have bought)
 
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