... recursive procedures.
The tool can handle left recursion.
An integral feature of "Mouse" is the mechanism for specifying semantics (also in Java). This makes "Mouse" a convenient tool if one needs an ad-hoc language processor. Being written in Java, the processor is operating-system independent.
Included in the package is PEG Explorer, an interactive tool to investigate the effect of limited backtracking.
Sample grammars for Java & C are available from the Web Site.