title: How to use cscope?
body: <p>I am using cscope to get familiar with all the keywords used in socket programming. I went to the directory with c files. I used cscope. and then I searched for <code>AF_INET</code>. I got this:</p>
  <pre><code>#define AF_FILE         PF_FILE
  #define AF_INET         PF_INET
  #define AF_AX25         PF_AX25
  </code></pre>
  <p>This was a full page. I only published part of it. Now I want to know from where this <code>PF_INET</code> is coming? what command I should use. I have seen a guy to double click on <code>PF_INEt</code> and using some command to find it. I don't know what the command is?</p>
  <p>The second thing is when I quit the page with <code>:q</code> command. I come to this page:</p>
  <pre><code>Global definition: AF_INET
  
    File     Line
  0 socket.h 119 #define AF_INET PF_INET
  
  
  
  Find this C symbol:
  Find this global definition:
  Find functions called by this function:
  Find functions calling this function:
  Find this text string:
  Change this text string:
  Find this egrep pattern:
  Find this file:
  Find files #including this file:
  </code></pre>
  <p>Here the cursor is blinking at 0. If I want to search again something, how I will do?</p>