Provides an interactive thesaurus .
The explain command provides an interactive thesaurus for the English-language phrases found by the diction command. Before using the explain command, use the diction command to obtain a list of poorly worded phrases. When you use the explain command, the system prompts you for a phrase and responds with a grammatically acceptable alternative. You can continue typing phrases, or you can exit by entering the Ctrl-D key sequence.
The explain command also takes piped input from the command line, as shown in the following example:
diction Filename | explain
No other command line parameters are valid.
The diction command.