Edited ch01_intro.adoc with Atlas code editor

ch01_intro.adoc

@@ -381,7 +381,7 @@ payment.
 
 ==== Receiving Bitcoin
 
-Alice((("bitcoins", "receiving")))((("receiving", "bitcoins"))) uses the _Receive_ button, which displays a QR code, shown in <<wallet_receive>>.
+Alice((("bitcoins", "receiving")))((("receiving bitcoins"))) uses the _Receive_ button, which displays a QR code, shown in <<wallet_receive>>.
 
 [[wallet_receive]]
 .Alice uses the Receive screen on her mobile Bitcoin wallet, and displays her address in a QR code format
@@ -452,7 +452,7 @@ currencies.
 [[sending_receiving]]
 ==== Sending and Receiving Bitcoin
 
-Alice ((("bitcoins", "sending", id="bitcoin-send")))((("sending", "bitcoins", id="send-bitcoin")))((("bitcoins", "receiving", id="bitcoin-receive")))((("receiving", "bitcoins", id="receive-bitcoin")))has
+Alice ((("bitcoins", "sending", id="bitcoin-send")))((("sending", "bitcoins", id="send-bitcoin")))((("bitcoins", "receiving", id="bitcoin-receive")))((("receiving bitcoins", id="receive-bitcoin")))has
 decided to buy 0.001 bitcoins. After she and Joe check the exchange rate,
 she gives Joe an appropriate amount of cash, opens her mobile wallet
 application, and selects Receive. This
@@ -504,4 +504,4 @@ transaction, Alice's wallet will indicate that it is receiving
 At first, ((("bitcoins", "clearing transactions")))((("clearing transactions")))((("transactions", "clearing")))((("confirmations", see="clearing transactions")))Alice's address will show the transaction from Joe as "Unconfirmed." This means that the transaction has been propagated to the network but has not yet been recorded in the Bitcoin transaction journal, known as the blockchain. To be confirmed, a transaction must be included in a block and added to the blockchain, which happens every 10 minutes, on average. In traditional financial terms this is known as _clearing_. For more details on propagation, validation, and clearing (confirmation) of bitcoin transactions, see <<mining>>.
 ****
 
-Alice is now the proud owner of 0.001 BTC that she can spend. Over the next few days, Alice buys more bitcoin using an ATM and((("bitcoins", "sending", startref="bitcoin-send")))((("sending", "bitcoins", startref="send-bitcoin")))((("bitcoins", "receiving", startref="bitcoin-receive")))((("receiving", "bitcoins", startref="receive-bitcoin"))) an exchange. In the next chapter we will look at her first purchase with Bitcoin, and examine the underlying transaction and propagation technologies in more detail.
+Alice is now the proud owner of 0.001 BTC that she can spend. Over the next few days, Alice buys more bitcoin using an ATM and((("bitcoins", "sending", startref="bitcoin-send")))((("sending", "bitcoins", startref="send-bitcoin")))((("bitcoins", "receiving", startref="bitcoin-receive")))((("receiving bitcoins", startref="receive-bitcoin"))) an exchange. In the next chapter we will look at her first purchase with Bitcoin, and examine the underlying transaction and propagation technologies in more detail.