Some basic commands

specifications/0001_LanguageSyntax.md

@@ -2,6 +2,8 @@
 * [Action Statements](#action-statements)
     * [CREATE EXCHANGE](#create-exchange-statement)
     * [CREATE SPREAD](#create-spread-statement)
+    * [UPDATE TRIGGER](#update-trigger-statement)
+    * [LIST TRIGGERS](#nop)
     * [SELL](#sell-statement)
     * [BUY](#buy-statement)
 * [Functions](#functions)
@@ -10,6 +12,7 @@
 * [Types of Exchange](#types-of-exchange)
     * [IB_API](#ib_api)
     * [HIVE](#hive)
+    * [MOCK](#mock-exchange)
 
 
 # Action Statements
@@ -40,6 +43,11 @@ CREATE SPREAD OF 10 BTC FOR QQQToken FROM "CryptoExchange"
     HEDGE QQQToken FOR QQQ FROM "StockExchange"
 ```
 
+## UPDATE TRIGGER
+```
+TODO
+```
+
 
 ## SELL Statement
 ```
@@ -197,3 +205,9 @@ SELL 1 BTC OF BTC
     FROM "CryptoExchange"
     FOR EVERY 1 BTC OF BTC BOUGHT FROM "CryptoExchange"
 ```
+
+# Types of Exchange
+
+## Mock Exchange
+The mock exchange is an exchange for testing purpose
+