Need to specify amount to buy/sell

specifications/0001_LanguageSyntax.md

@@ -4,6 +4,7 @@
     * [BUY](#buy-statement)
 * [Functions](#functions)
     * [PURCHASING_POWER](#purchasing_power)
+    * [CURRENT_PRICE](#current_price)
 
 
 # Action Statements
@@ -11,6 +12,7 @@
 ## SELL Statement
 ```
 [SELL] [Units] OF [Product]
+    FOR [Amount]
     FROM [Exchange]
     WITH LIMIT OF [Units]
 AND
@@ -34,6 +36,7 @@ SELL 1 SHARES OF QQQ FROM "MyBrokerAccount"
 #### Sell Trigger
 ```
 SELL 1 SHARES OF QQQ
+  FOR 10 USD
   FROM "MyBrokerAccount"
   WITH LIMIT OF 100 SHARES
   FOR EVERY
@@ -45,6 +48,7 @@ AS 'My Hedge Trigger'
 ## BUY Statement
 ```
 [BUY] [Units] OF [Product]
+    FOR [Amount]
     FROM [Exchange]
     WITH LIMIT OF [Units]
 AND
@@ -60,6 +64,7 @@ AND
 ### Examples
 ```
 BUY 1 SHARES OF BTC_ETF
+  FOR 10 USD
   FROM "MyBrokerAccount"
   WITH LIMIT OF PURCHASING_POWER( "MyBrokerAccount", "QQQ" )
   FOR EVERY
@@ -75,29 +80,73 @@ BUY 1 SHARES OF BTC_ETF
 
 Returns the maximum [Units] of [Product] can purchase from [Exchange]
 
-### Other things
+## CURRENT_PRICE
 
+`CURRENT_PRICE( Exchange, Product )`
+
+Returns the current price of a product from exchange
+
+# Examples
+
+## Creating a spread
+
+* Max position: $1000
+* Spread: $10
+* QQQ etf price(Qetf): $100
+
++-----------------+----------------+
+| Bid             | Ask            |
++-----------------+----------------|
+| 10shares@$95    | 10shares@$105  |
+| ($1000 of Qetf) | ($800 of Qetf) |
++-----------------+----------------+
+
+If a trader hit ur ASK by bidding 2 shares of QQQ token
+
++-----------------+----------------+
+| Bid             | Ask            |
++-----------------+----------------|
+| 10shares@$95    | 8shares@$105   |
+| ($1000 of Qetf) | ($800 of Qetf) |
++-----------------+----------------+
+
+If another trader hit ur ASK with a 20 shares of bid, then only 8 shares of his order can be filled. 
+* No need to handle his remaining 12 shares , its not ur responsibility, its his "broker/app/program" to deal with unfilled order.
+
++-----------------+----------------+
+| Bid             | Ask            |
++-----------------+----------------|
+| 10shares@$95    |                |
+| ($1000 of Qetf) |                |
++-----------------+----------------+
+
+
+### SELL Order
 ```
-(set max position=$1000,
-spread=$10,  QQQ etf price(Qetf)=$100. ), 
-then the quote u give is: 
-               Bid                   Ask
-10shares@$95           10shares@$105
-($1000 of Qetf).         ($1000 of Qetf)
-
-if a trader hit ur ASK by bidding 2 shares of QQQ token ,then the output quote:
-           Bid.                      Ask
-10shares@$95           8shares@$105
-($1000 of Qetf).        ($800 of Qetf)
-
-if another trader hit ur ASK with a 20 shares of bid  , then only 8 shares of his order can be filled. 
-u dont need to handle his remaining 12 shares , its not ur responsibility, its his "broker/app/program" to deal with unfilled order.
-so ur quote becomes
-Bid.                                 Ask
-10shares@$95           
-($1000 of Qetf).
+SELL 10 SHARES OF "QQQ_TOKEN"
+    FOR CURRENT_PRICE( "CryptoExchange", "QQQ_TOKEN" ) + 5 USD
+    WITH LIMIT OF 1000 USD
+    FROM "CryptoExchange"
 ```
 
+
+### BUY Order
+```
+BUY 10 SHARES OF "QQQ_TOKEN"
+    FOR CURRENT_PRICE( "CryptoExchange", "QQQ_TOKEN" ) - 5 USD
+    WITH LIMIT OF 1000 USD
+    FROM "CryptoExchange"
+```
+
+### BUY Trigger for above
+```
+BUY 1 SHARES OF "QQQ"
+    FOR CURRENT_PRICE( "StockExchange", "QQQ" )
+    FROM "StockExchange"
+    FOR EVERY 1 SHARES OF "QQQ_TOKEN" SOLD FROM "CryptoExchange"
+```
+
+
 ```
 [In reply to Penguin]
 #Code example: