The Alliance package provide a wide range of libraries, either static, ie. fixed cells, or dynamic, as the block is produced by running a parameterized generator. These libraries are compatible with any two metals/one polysilicon technology.
Each object in the library has, for static ones, or produces, for dynamics ones, three views at least :
Area loss due to the symbolic layout compared to micron design has been estimated ranging from 10% to 20%. In any case, loosing area is affordable, where loosing years is not.