 The most popular and accepted of the job case designs in America was the California Job Case, which took its name from the Pacific coast location of the foundries that made the case popular.Traditionally, the capital letters were stored in a separate drawer or case that was located above the case that held the other letters; this is why capital letters are called "upper case" characters while the non-capitals are "lower case".Compartments also held spacers, which are blocks of blank type used to separate words and fill out a line of type, such as "em" and "en" quads ("quadrats", or spaces.