The project requirements state that we need to catch usage errors and syntax errors. While it is stated that syntax errors must be reported to stderr beginning with a "!", I'm not sure what the following "@" character for debug printing is referring to. My thoughts are that Usage errors from the command line will be caught like we have been doing in the labs previously ("Usage:..."), while with the syntax errors we might print ("!Syntax Error"). Would the debug printing be another line after that commencing with "@" which would detail more explicitly what the syntax error is? Do we even need to explicitly detail what kind of syntax error occurred? Thanks.