Methods, systems, apparatus, and computer-readable media for customizing a computer system firmware image utilizing a firmware configuration data structure. The method indicates in the indicator a pre-embossing feed indication to indicate the incoming-feed operation and a post-embossing feed indication to indicate the outgoing-feed operation in an indicating mode which is different from an embossing indication to indicate that the apparatus is in the embossing operation. Once the trigger event occurs, one of a plurality of features is randomly selected and applied to the symbols in the existing array of symbols, and an award is then granted based on the results.