[ASN.1] SyntaxList Validity?

[Ramaswamy]

Hi,     I have some clarification on the validity of the SyntaxList w.r.t. the clause in Sec 10.12 of X.681 which says - "If an "OptionalGroup" starts with a "Literal", then the first token following the "OptionalGroup" shall also be a "Literal" and shall be different from the first "Literal" of all immediately preceding "OptionalGroup"s,".       Consider the following ASN.1 spec snippet - MY-CLASS ::= CLASS {     &Type    OPTIONAL,     &value   INTEGER OPTIONAL } WITH SYNTAX {     [ &Type A &value ] A }       In the above case, is the starting literal of the OptionalGroup '&Type' or 'A'?       Further if an OptionalGroup begins with an OptionalGroup then is the starting literal of the outer OptionalGroups the set of starting literal of the inner OptionalGroups and that of its own. Lets assume the above SyntaxList is changed as follows -   WITH SYNTAX {     [ [ A &Type ] [ B &value ] ] C }       Then is the starting literal of the outer OptionalGroup { A, B }? Thanking You.   Yours Sincerely Ramaswamy "Any intelligent fool can make things bigger, more complex, and more violent. It takes a touch of genius -- and a lot of courage -- to move in the opposite direction." - Albert Einstein Information contained and transmitted by this E-MAIL is proprietary to Synergy Infotech Private Limited and is intended for use only by the individual or entity to which it is addressed, and may contain information that is privileged, confidential or exempt from disclosure under applicable law. If this is a forwarded message, the content of this E-MAIL may not have been sent with the authority of the Company. If you are not the intended recipient, an agent of the intended recipient or a  person responsible for delivering the information to the named recipient,  you are notified that any use, distribution, transmission, printing, copying or dissemination of this information in any way or in any manner is strictly prohibited. We have taken precautions to minimize the risk of transmitting software viruses, but we advise you to carry out your own virus checks on any attachment to this message. We cannot accept liability for any loss or damage caused by software viruses. If you have received this communication in error, please delete this mail & notify us immediately at mailto:[EMAIL PROTECTED]