General formate for an ECL statement
@LABEL:COMMAND,OPTION(S)FIELD1,FIELD2..COMMENT
@LABEL:OPTION(S)FIELD1,FIELD2,COMMAND..COMMENT
@LABEL:OPTION(S)FIELD1,FIELD2,..COMMENT,COMMAND
@COMMAND:LABEL,OPTION(S)FIELD1,FIELD2..COMMENT