Device filtering option in PVS LVS rule deck

[Krish Babu]

Hi,
Can any one tell me what is the function from below mentioned rules to un-filter the devices that has the all the nodes(D G S B) connected together.

lvs_filter_option AG;
lvs_filter_option RG;
lvs_filter_option RC;
lvs_filter_option RE;

Please do post if any user manual for PVS LVS rules.

Thanks,
Krish Babu