set_clock_skew replacements?

[khorlipmin]

set_clock_skew

I am not sure what are the replacements for the new DC version for set_clock_skew
switches below: and I cant find the info in sold, please help

set_clock_skew -plus_uncertainty
set_clock_skew -minus_uncertainty
set_clock_skew -ideal

thanks a bunch

 

[research235]

U will have it in the DC manual .. please check it

suresh

 

[ivlsi]

How 'set_clock_uncertainty' differ from 'set_clock_skew' commands?