Informix datatypes...

Is there some possibility to define a column data type in Informix? I mean like in Oracle: table%ROWTYPE. Is there someway I can do this? I want to pass a parameter to a procedure and I would rather pass a single one than as many as number of columns the table has. Can I avoid passing parameters like execute procedure myproc( var.field1, var.field2, var.field3,... ) and do something like execute procedure myproc( var ) ? That would be useful :-)