A three-dimensional memory array and method for storing data bits and ECC bits therein is provided. A database includes a plurality of known instructions with best known methods for measuring different feature dimensions by creating a summary of a recipes used by the tool, and adding categorization attributes to identify the summary for retrieval from the database. The head has an upper surface, an anterior surface, a posterior surface, a lateral surface and a lower surface. The clamp can also include cradles and caps for holding auxiliary lines.