Edited ch04.asciidoc with Atlas code editor

ch04.asciidoc

@@ -95,7 +95,7 @@ The +dumpprivkey+ command opens the wallet and extracts the private key that was
 The +dumpprivkey+ command is not generating a private key from a public key, as this is impossible. The command simply reveals the private key that is already known to the wallet and which was generated by the +getnewaddress+ command. 
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-You can also use the Bitcoin Explorer command-line tool (see <<libbitcoin>>) to generate and display private keys with the commands((("Bitcoin Explorer","seed command")))((("seed command (bx)"))) +seed+,((("Bitcoin Explorer","ec-new command")))((("ec-new command (bx)"))) +ec-new+, and((("Bitcoin Explorer","ec-to-wif command")))((("ec-to-wif command (bx)"))) +ec-to-wif+: (((range="endofrange", startref="ix_ch04-asciidoc3")))(((range="endofrange", startref="ix_ch04-asciidoc2")))(((range="endofrange", startref="ix_ch04-asciidoc1")))
+You can also use the Bitcoin Explorer command-line tool (see <<appdx_bx>>) to generate and display private keys with the commands((("Bitcoin Explorer","seed command")))((("seed command (bx)"))) +seed+,((("Bitcoin Explorer","ec-new command")))((("ec-new command (bx)"))) +ec-new+, and((("Bitcoin Explorer","ec-to-wif command")))((("ec-to-wif command (bx)"))) +ec-to-wif+: (((range="endofrange", startref="ix_ch04-asciidoc3")))(((range="endofrange", startref="ix_ch04-asciidoc2")))(((range="endofrange", startref="ix_ch04-asciidoc1")))
 
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 $ bx seed | bx ec-new | bx ec-to-wif