WIP

docs/src/content/docs/ref/core-advanced.mdx

@@ -13,10 +13,66 @@ Various niche, dangerous or unstable features which can produce unexpected resul
 
 :::
 
+## gasConsumed
+
+<Badge text="Available since Tact 1.5" variant="tip" size="medium"/><p/>
+
+```tact
+fun gasConsumed(): Int;
+```
+
+Returns the [nanoToncoins](/book/integers#nanotoncoin) [`Int{:tact}`][int] amount of gas consumed by [TVM][tvm] in the current transaction so far. The resulting value includes the cost of calling this function.
+
+Usage example:
+
+```tact
+let gas: Int = gasConsumed();
+```
+
+:::note[Useful links:]
+
+  [Gas in TON Docs](https://docs.ton.org/v3/documentation/smart-contracts/transaction-fees/fees#gas)
+
+:::
+
+## myStorageDue
+
+<Badge text="Available since Tact 1.5" variant="tip" size="medium"/><p/>
+
+```tact
+fun myStorageDue(): Int;
+```
+
+Returns the [nanoToncoins](/book/integers#nanotoncoin) [`Int{:tact}`][int] amount of accumulated storage fee debt. The storage fees are usually deducted from the incoming message value prior to calculation of the new contract balance.
+
+Usage example:
+
+```tact
+let debt: Int = myStorageDue();
+```
+
+:::note[Useful links:]
+
+  [Storage fee in TON Docs](https://docs.ton.org/v3/documentation/smart-contracts/transaction-fees/fees-low-level#storage-fee)
+
+:::
+
+## getStorageFee
+
+TODO: rewrite the draft
+
+## getComputeFee
+
+TODO: rewrite the draft
+
+## getSimpleComputeFee
+
+TODO: rewrite the draft
+
 ## Context.readForwardFee
 
 ```tact
-extends fun readForwardFee(self: Context): Int
+extends fun readForwardFee(self: Context): Int;
 ```
 
 Extension function for the [`Context{:tact}`](/ref/core-common#context).
@@ -29,6 +85,14 @@ Usage example:
 let fwdFee: Int = context().readForwardFee();
 ```
 
+## getForwardFee
+
+TODO: rewrite the draft
+
+## getOriginalFwdFee
+
+TODO: rewrite the draft
+
 ## getConfigParam
 
 ```tact
@@ -334,3 +398,5 @@ parsedVarAddr.address.loadUint(123); // 345
 [int]: /book/integers
 [slice]: /book/cells#slices
 [s]: /book/structs-and-messages#structs
+
+[tvm]: https://docs.ton.org/learn/tvm-instructions/tvm-overview

docs/src/content/docs/ref/core-cells.mdx

@@ -209,6 +209,24 @@ let fizz: Builder = b.storeBit(true);  // writes 1
 let buzz: Builder = b.storeBit(false); // writes 0
 ```
 
+## Builder.storeBuilder
+
+```tact
+extends fun storeBuilder(self: Builder, cell: Builder): Builder;
+```
+
+Extension function for the [`Builder{:tact}`][builder].
+
+Appends all data from a [`Builder{:tact}`][builder] `cell` to the copy of the [`Builder{:tact}`][builder]. Returns that copy.
+
+Usage example:
+
+```tact
+let b: Builder = beginCell().storeCoins(42);
+let fizz: Builder = beginCell().storeBuilder(b);
+b.endCell() == fizz.endCell(); // true
+```
+
 ## Builder.storeSlice
 
 ```tact