@subsection Accounts Index Append-only list of addresses. Typically used for access control lists. Addresses may be @emph{added}, @emph{removed}, aswell as @emph{deactivated} and @emph{activated}. Deactivated accounts still count towards the @code{entryCount}. The @code{entry} method is used to iterate the account list. The order of which accounts are returned is not guaranteed. Any returned value matching @code{address(0x00)} should be skipped, and not counted towards @code{entryCount}. May optionally record time when account was added. @subsubsection ERC165 Interface identifier @include ../../build/AccountsIndex.interface @subsubsection Solidity interface definition @include ../../build/contract_AccountsIndex.texi @subsubsection Reference implementation @uref{git://holbrook.no/eth-accounts-index.git,} (v0.5.1) @subsection Accounts Index Mutable Extends the functionality of @code{Accounts Index} to allow changes to the address list. Addresses may be @emph{added}, @emph{removed}, aswell as @emph{deactivated} and @emph{activated}. Deactivated accounts still count towards the @code{entryCount}. @subsubsection ERC165 Interface identifier @include ../../build/AccountsIndexMutable.interface @subsubsection Solidity interface definition @include ../../build/contract_AccountsIndexMutable.texi @subsubsection Reference implementation @uref{git://holbrook.no/eth-accounts-index.git,} (v0.5.1)