Hi,
    I have the following query regarding the significance of the 2nd extension marker permitted in a SEQUENCE / SET type.
 
    What is the difference in interpretation / significance b/w the following 2 notations of extended SEQUENCE across 2 different versions on the SEQUENCE. To be more precise, what is the advantage / implication of using the 2nd extension marker notation compared to the one with single-extension marker.

Details ::=                                -- Version1
SEQUENCE
{
    first-name     PrintableString,
    last-name      PrintableString,
    ...,
    ...,
    middle-name    PrintableString
}
 
===================================================================
Details ::=                                -- Version2
SEQUENCE
{
    first-name     PrintableString,
    last-name      PrintableString,
    ...,
    age            INTEGER(0..999)
    ...,
    middle-name    PrintableString
}

 

Details ::=                                -- Version1
SEQUENCE
{
    first-name     PrintableString,
    last-name      PrintableString,
    middle-name    PrintableString,
    ...
}
 
===================================================================
Details ::=                                -- Version2
SEQUENCE
{
    first-name     PrintableString,
    last-name      PrintableString,
    middle-name    PrintableString,
    ...,
    age            INTEGER(0..999)
}

 
Thanking you.
 
Yours Sincerely
Ramaswamy

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