Hi, I would like to know the meaning of the synthesis tool message. +--------------------------------------------------------------------------- ----+ | design_A | |--------------------------------------------------------------------------- ------| | Cell area | Total area | Late slack | Early slack |----------------+-----------------+----------------+----------------------- ----| | 10075.77 | 10075.77 | 5.5432 | 0.6868 | +--------------------------------------------------------------------------- -----+ What is the difference between early slack and late slack. Thanks in advance. ricky