Support Functions
    @dbname	String containing the default database name.
 
    @equaloption	Equals-to option value provided in the exec or run commands.
 
    @env	Windows environment variable string.
 
    @errorcount	Number of errors encountered running a program.
 
    @evpath	Directory path of the EViews executable.
 
    @getnextname	String containing next available name in the workfile.
 
    @hasoption	Indicator for whether option is provided in the exec or run command.
 
    @isobject	Does object exist in active workfile page.
 
    @isvalidgroup	Does the string represent a valid EViews group or auto-series.
 
    @isvalidname	Indicator for whether string represents a valid name for an EViews object.
 
    @lasterrnum	Last error number generated by a previously issued command.
 
    @lasterrstr	Last error message generated by a previously issued command.
 
    @linepath	Location of the program file currently being executed.
 
    @maxerrcount	Maximum number of errors in a program before halting execution.
 
    @option	Option string provided in the 
exec or 
run command.
 
    @runpath	Location of the program currently being executed.
 
    @temppath	Directory path for EViews temporary files.
 
    @toc	Elapsed time (since timer reset) in seconds.
 
    @verstr	EViews product name string.
 
    @wdir	List of all files in a directory.
 
    @wfattrnames	String containing a list of attribute names in the workfile .
 
    @wfattrvals	String containing a list of attribute values in the workfile .
 
    @wfpath	String containing path of current workfile.
 
    @wlookup	String list formed from objects in a workfile or database matching a pattern.
 
    @wquery	String containing list of object attributes for objects matching a database query 
 
    @xgetstr	String value from the external application.
 
    @xgetnum	Scalar numeric value from the external application.
 
    @xputnames	List of objects created in foreign application using XPUT.
 
    @xtype	Type of active external connection.
 
    @xverstr	External application version number as a string 
 
    @xvernum	External application version number as a number