From d55b7ef766c085273857657baa1b9656688bf7db Mon Sep 17 00:00:00 2001
From: Vitor <vncoelho@gmail.com>
Date: Tue, 11 Jun 2019 14:07:57 -0300
Subject: [PATCH] Adding pre-balance descriptions and transaction chapter

---
 merge_sections.sh       |  5 +++++
 sections/NeoContract.md | 32 ++++++++++++++++++++++++++++++++
 sections/Transaction.md | 14 ++++++++++++++
 3 files changed, 51 insertions(+)
 create mode 100644 sections/Transaction.md

diff --git a/merge_sections.sh b/merge_sections.sh
index 51a1011..de50235 100755
--- a/merge_sections.sh
+++ b/merge_sections.sh
@@ -27,6 +27,11 @@ cat NeoVM.md >> ../specification.md
 echo "" >> ../specification.md
 echo "&nbsp; \newpage" >> ../specification.md
 
+echo "" >> ../specification.md
+cat Transaction.md >> ../specification.md
+echo "" >> ../specification.md
+echo "&nbsp; \newpage" >> ../specification.md
+
 echo "" >> ../specification.md
 cat NeoContract.md >> ../specification.md
 echo "" >> ../specification.md
diff --git a/sections/NeoContract.md b/sections/NeoContract.md
index 1efaacb..84918c9 100644
--- a/sections/NeoContract.md
+++ b/sections/NeoContract.md
@@ -1 +1,33 @@
 # NeoContract
+
+
+## Payable applications
+
+Payable applications are all applications that are `payable` or pays any `network_fee` or `sys_fee`;
+
+### Balances updates
+
+#### Pre-balances
+
+Pre-balances are updated when transactions enter in the `mempool`, throughout the `verification` process.
+In this sense, `verification` updates pre-balances.
+
+In this sense, when a transaction is relayed, we are ensured that all network fees can be correctly payed.
+
+#### After blocks persists
+
+In the meanwhile, while transaction are being executed, pre-balances are again updated for all `payable transactions` given a parameter defined as `maximum_gas_payable`.
+
+In this sense, Invocation transaction should declare the intention to spend an amount of `X` GAS;
+
+## Appendices
+
+### Native Contracts
+
+#### NEO Native
+
+#### GAS Native
+
+#### SimplePolicy
+
+#### Voting
diff --git a/sections/Transaction.md b/sections/Transaction.md
new file mode 100644
index 0000000..a64f8b9
--- /dev/null
+++ b/sections/Transaction.md
@@ -0,0 +1,14 @@
+# Transactions
+
+## How it works
+
+## Signer and co-signers
+
+## Attaching network and system fees
+
+The fields of the transaction in which this values are attached are:
+
+* system fee is attached as GAS (To be updated)
+* network fee is attached as Sender (To be updated)
+
+As soon as transaction enters in the mempool, these values are updated in the pre-balance.