GDSII is design exchange format between ASIC design house and the foundry. GDSII Format is final output from Physical design. It is a binary file format representing planar geometric shapes, text labels, and other information about the layout in hierarchical form. The data can be used to reconstruct all or part of the artwork to be used in sharing layouts, transferring artwork between different tools, or creating photomasks.Can someone tell me more about GDSII format. I read it somewhere that hard macros are provided in this format.