To compare two cells, use these commands (in menu Tool / NCC):
-
Schematic and Layout Views of Cell in Current Window
Use a heuristic to figure out what to compare against the cell in
the current window. If the current cell is a schematic then
compare it against some layout cell in the same cell group. If the
current cell is a layout then compare it against some schematic
cell in the same cell group. Since most cell groups have one
layout cell and one schematic cell, this form of the NCC command is
usually the most convenient.
-
Cells from two Windows
Compare the two cells that are displayed in the two opened windows
(there must be exactly two windows). This is useful when the
schematic and layout are not in the same cell group. The command
can also be used to compare schematics with schematics or layout
with layout. However, the command refuses to compare icon cells
since icons cells don't have defined connectivity.