The maskgen tool produces a mask file from a set of Java Card Assembly and CAP files produced by the Converter. The format of the output mask file is targeted to a specific platform. The plug-ins that produce each different maskgen output format are called generators. The supported generators are cref, which supports the Java Card RE, and size, which reports size statistics for the mask. Other generators that are not supported in this release include jref, which supports the Java programming language Java Card RE, and a51, which supports the Keil A51 assembly language interpreter. Java Card Assembly Syntax Example provides additional information about the contents of a Java Card Assembly file.