ASM Alias contents

Hi, I have run the following

SELECT f.group_number, f.file_number, a.name, a.file_number alias_file_number,f.type

FROM v$asm_file f, v$asm_alias a

WHERE f.group_number(+)=a.group_number

and f.file_number(+)=a.file_number

ORDER BY 1, 2;

It shows

GROUP_NUMBER     FILE_NUMBER     NAME                                ALIAS_FILE_NUMBER TYPE

======================================================================================

1                               253                      REGISTRY.253.837082723  253                              ASMPARAMETERFILE

                                                            ASMPARAMETERFILE       4294967295

                                                            ASM                                  4294967295

Q1. What is the Registry file indicated - is this the control file of the ASM instance itself ?

Q2. Is the ASMPARAMETERFILE the SPFILE of the ASM Instance ? - why is it not in a Disk Group ?