GrammarDumpDirectorySize
                                                    Maximum size of the grammar dump directory.
| 
                                                                     Value  | 
                                                                
                                                                     Integer: 1–INT_MAX representing disk storage in kilobytes.  | 
                                                            
| 
                                                                     Default  | 
                                                                
                                                                     100000 (100 MB)  | 
                                                            
| 
                                                                     How to set  | 
                                                                
                                                                     As an environment variable. In the SpeechWorks.cfg configuration file. If both locations are defined, the environment variable is used rather than the value in the configuration file.  | 
                                                            
| 
                                                                     Usage  | 
                                                                
                                                                     This parameter is only used when GrammarDumpDirectory is set.  | 
                                                            
If the maximum size is reached, the Recognizer removes previously written grammars (first in, first out) before writing new ones.
The following environment variable defines a directory size of 10 Megabytes:
setenv GrammarDumpDirectorySize "10000"