I moved your question to the appropriate forum. You may find the following document useful:

Title: Solutions Enabler Symmetrix CLI Command Reference HTML Help

Abstract: Provides a reference for command-line users and script programmers by describing all of the SYMCLI commands, error codes, and option file parameters of the EMC Solutions Enabler software.

You can find this and other documentation on Powerlink: Home > Support > Technical Documentation and Advisories > Software ~ S ~ Documentation > Solutions Enabler > v7.x > General Reference

In case you need details on symapi, have a look at this thread:

http://forums.emc.com/forums/thread.jspa?threadID=115789&tstart=0