docs: mark account incarnation allocation evidence

include/xrpl/protocol/detail/ledger_entries.macro

@@ -274,7 +274,9 @@ LEDGER_ENTRY(ltACCOUNT_ROOT, 0x0061, AccountRoot, account, ({
     {sfImportSequence,       soeOPTIONAL},
     {sfGovernanceFlags,      soeOPTIONAL},
     {sfGovernanceMarks,      soeOPTIONAL},
+    //@@start account-index-optional-accountroot-field
     {sfAccountIndex,         soeOPTIONAL},
+    //@@end account-index-optional-accountroot-field
     {sfTouchCount,           soeOPTIONAL},
     {sfHookStateScale,       soeOPTIONAL},
     {sfCron,                 soeOPTIONAL},
@@ -434,7 +436,9 @@ LEDGER_ENTRY(ltFEE_SETTINGS, 0x0073, FeeSettings, fee, ({
     {sfReserveBaseDrops,       soeOPTIONAL},
     {sfReserveIncrementDrops,  soeOPTIONAL},
     {sfXahauActivationLgrSeq,  soeOPTIONAL},
+    //@@start account-count-optional-fees-field
     {sfAccountCount,           soeOPTIONAL},
+    //@@end account-count-optional-fees-field
     {sfNetworkID,              soeOPTIONAL},
     {sfPreviousTxnID,          soeOPTIONAL},
     {sfPreviousTxnLgrSeq,      soeOPTIONAL},

src/xrpld/app/tx/detail/DeleteAccount.cpp

@@ -477,8 +477,10 @@ DeleteAccount::doApply()
     if (mSourceBalance > XRPAmount(0) && dst->isFlag(lsfPasswordSpent))
         dst->clearFlag(lsfPasswordSpent);
 
+    //@@start account-delete-erases-account-root
     view().update(dst);
     view().erase(src);
+    //@@end account-delete-erases-account-root
 
     return tesSUCCESS;
 }

src/xrpld/app/tx/detail/GenesisMint.cpp

@@ -199,6 +199,7 @@ GenesisMint::doApply()
 
             bool const created = !sle;
 
+            //@@start genesis-mint-account-without-account-index
             if (created)
             {
                 // Create the account.
@@ -357,6 +358,7 @@ GenesisMint::doApply()
 
             sle->setFieldAmount(sfBalance, amt);
         }
+        //@@end genesis-mint-account-without-account-index
         else if (amt > beast::zero)
         {
             // Credit the account

src/xrpld/app/tx/detail/Import.cpp

@@ -1513,6 +1513,7 @@ Import::doApply()
 
         sle->setFieldU32(sfSequence, seqno);
         sle->setFieldU32(sfOwnerCount, 0);
+        //@@start import-account-index-allocation
         if (sleFees && view().rules().enabled(featureXahauGenesis))
         {
             uint64_t accIdx = sleFees->isFieldPresent(sfAccountCount)
@@ -1521,6 +1522,7 @@ Import::doApply()
             sle->setFieldU64(sfAccountIndex, accIdx);
             sleFees->setFieldU64(sfAccountCount, accIdx + 1);
         }
+        //@@end import-account-index-allocation
 
         if (ctx_.tx.getSigningPubKey().empty() ||
             calcAccountID(PublicKey(makeSlice(ctx_.tx.getSigningPubKey()))) !=

src/xrpld/app/tx/detail/Payment.cpp

@@ -253,6 +253,7 @@ Payment::preclaim(PreclaimContext const& ctx)
     auto const k = keylet::account(dstAccountID);
     auto const sleDst = ctx.view.read(k);
 
+    //@@start payment-account-index-allocation
     if (!sleDst)
     {
         // Destination account does not exist.
@@ -379,6 +380,7 @@ Payment::doApply()
 
         view().insert(sleDst);
     }
+    //@@end payment-account-index-allocation
     else
     {
         // Tell the engine that we are intending to change the destination

src/xrpld/app/tx/detail/Remit.cpp

@@ -318,6 +318,7 @@ Remit::doApply()
     }
 
     // if the destination doesn't exist, create it.
+    //@@start remit-account-index-allocation
     bool const createDst = !sleDstAcc;
     if (createDst)
     {
@@ -356,6 +357,7 @@ Remit::doApply()
         sleDstAcc->setFieldAmount(sfBalance, STAmount{XRPAmount{0}});
         sb.insert(sleDstAcc);
     }
+    //@@end remit-account-index-allocation
 
     // if theres a minted uritoken the sender pays for that
     if (ctx_.tx.isFieldPresent(sfMintURIToken))