Merge pull request #3226 from XRPLF/mvadari-patch-1

Update feesettings.md

Author: mDuo13

docs/references/protocol/ledger-data/ledger-entry-types/feesettings.md

@@ -11,6 +11,25 @@ The `FeeSettings` entry contains the current base [transaction cost](../../../..
 
 ## Example {% $frontmatter.seo.title %} JSON
 
+This ledger entry has two formats, depending on whether the [XRPFees amendment][] was enabled at the time:
+
+{% tabs %}
+{% tab label="Current Format" %}
+```json
+{
+  "BaseFeeDrops": "10",
+  "Flags": 0,
+  "LedgerEntryType": "FeeSettings",
+  "PreviousTxnID": "4EEDB01BB943CE32E97BB468AC179ABF933B272D6FF990E76B6721FB48E069FC",
+  "PreviousTxnLgrSeq": 92508417,
+  "ReserveBaseDrops": "1000000",
+  "ReserveIncrementDrops": "200000",
+  "index": "4BC50C9B0D8515D3EAAE1E74B29A95804346C491EE1A95BF25E4AAB854A6A651"
+}
+```
+{% /tab %}
+
+{% tab label="Legacy Format" %}
 ```json
 {
    "BaseFee": "000000000000000A",
@@ -22,16 +41,28 @@ The `FeeSettings` entry contains the current base [transaction cost](../../../..
    "index": "4BC50C9B0D8515D3EAAE1E74B29A95804346C491EE1A95BF25E4AAB854A6A651"
 }
 ```
+{% /tab %}
+{% /tabs %}
 
 ## {% $frontmatter.seo.title %} Fields
 
-In addition to the [common fields](../common-fields.md), the {% code-page-name /%} ledger entry has the following fields:
+The fields of the `FeeSettings` ledger entry depend on whether the [XRPFees amendment][] was enabled the last time it was modified. If the last update was before the amendment became enabled, the entry uses the **legacy format**. If it has been updated after the amendment, it uses the **current format**. The fields it can have, in addition to the [common fields](../common-fields.md), are as follows:
 
+{% tabs %}
+{% tab label="Current Format" %}
+| Name                    | JSON Type | [Internal Type][] | Required? | Description            |
+|:------------------------|:----------|:------------------|:----------|:-----------------------|
+| `BaseFeeDrops`          | String    | Amount            | Yes       | The [transaction cost](../../../../concepts/transactions/transaction-cost.md) of the "reference transaction" in drops of XRP. |
+| `ReserveBaseDrops`      | String    | Amount            | Yes       | The [base reserve](../../../../concepts/accounts/reserves.md#base-reserve-and-owner-reserve) for an account in the XRP Ledger, as drops of XRP. |
+| `ReserveIncrementDrops` | String    | Amount            | Yes       | The incremental [owner reserve](../../../../concepts/accounts/reserves.md#base-reserve-and-owner-reserve) for owning objects, as drops of XRP. |
+| `PreviousTxnID`         | String    | UInt256           | No        | The identifying hash of the transaction that most recently modified this entry. _(Added by the [fixPreviousTxnID amendment][].)_ |
+| `PreviousTxnLgrSeq`     | Number    | UInt32            | No        | The [index of the ledger][Ledger Index] that contains the transaction that most recently modified this entry. _(Added by the [fixPreviousTxnID amendment][].)_ |
+{% /tab %}
+
+{% tab label="Legacy Format" %}
 | Name                | JSON Type | [Internal Type][] | Required? | Description            |
 |:--------------------|:----------|:------------------|:----------|:-----------------------|
 | `BaseFee`           | String    | UInt64            | Yes       | The [transaction cost](../../../../concepts/transactions/transaction-cost.md) of the "reference transaction" in drops of XRP as hexadecimal. |
-| `Flags`             | Number    | UInt32            | Yes       | A bit-map of boolean flags enabled for this object. Currently, the protocol defines no flags for `FeeSettings` objects. The value is always `0`. |
-| `LedgerEntryType`   | String    | UInt16            | Yes       | The value `0x0073`, mapped to the string `FeeSettings`, indicates that this object contains the ledger's fee settings. |
 | `ReferenceFeeUnits` | Number    | UInt32            | Yes       | The `BaseFee` translated into "fee units". |
 | `ReserveBase`       | Number    | UInt32            | Yes       | The [base reserve](../../../../concepts/accounts/reserves.md#base-reserve-and-owner-reserve) for an account in the XRP Ledger, as drops of XRP. |
 | `ReserveIncrement`  | Number    | UInt32            | Yes       | The incremental [owner reserve](../../../../concepts/accounts/reserves.md#base-reserve-and-owner-reserve) for owning objects, as drops of XRP. |
@@ -40,16 +71,8 @@ In addition to the [common fields](../common-fields.md), the {% code-page-name /
 
 {% admonition type="danger" name="Warning" %}The JSON format for this ledger entry type is unusual. The `BaseFee`, `ReserveBase`, and `ReserveIncrement` indicate drops of XRP but ***not*** in the usual format for [specifying XRP][Currency Amount].{% /admonition %}
 
-
-If the _[XRPFees amendment][]_ is enabled, the `FeeSettings` object has these fields instead:
-
-| Name                    | JSON Type | [Internal Type][] | Required? | Description            |
-|:------------------------|:----------|:------------------|:----------|:-----------------------|
-| `BaseFeeDrops`          | String    | Amount            | Yes       | The [transaction cost](../../../../concepts/transactions/transaction-cost.md) of the "reference transaction" in drops of XRP. |
-| `Flags`                 | Number    | UInt32            | Yes       | A bitmap of boolean flags enabled for this object. Currently, the protocol defines no flags for `FeeSettings` objects. The value is always `0`. |
-| `LedgerEntryType`       | String    | UInt16            | Yes       | The value `0x0073`, mapped to the string `FeeSettings`, indicates that this object contains the ledger's fee settings. |
-| `ReserveBaseDrops`      | String    | Amount            | Yes       | The [base reserve](../../../../concepts/accounts/reserves.md#base-reserve-and-owner-reserve) for an account in the XRP Ledger, as drops of XRP. |
-| `ReserveIncrementDrops` | String    | Amount            | Yes       | The incremental [owner reserve](../../../../concepts/accounts/reserves.md#base-reserve-and-owner-reserve) for owning objects, as drops of XRP. |
+{% /tab %}
+{% /tabs %}
 
 
 ## {% $frontmatter.seo.title %} Flags