[vhdl-200x-ft] Question on FT14: why a period in array element constraint

Folks,

I'm looking through FT14, and wonder why the proposed syntax includes a
period before an array element constraint. The specific rule is

  augmented_index_constraint ::=
    optional_index_constraint . constraint

This means a subtype indication constraining an element subtype would be
written

  A(0 to 7).(10 downto 1)

Is there any reason for not omitting the period and just writing it as

  A(0 to 7)(10 downto 1)

Thanks.

Cheers,

PA

--
Dr. Peter J. Ashenden                        peter@ashenden.com.au
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