title: In zenity forms, how can I set default values (initialize) entries?
body: <p>I've got a zenity form working, but I can't find any information on initializing the entries.  The Zenity help manual webpage doesn't address the issue.
  For example, the example from that webpage is</p>
  
  <pre><code>#!/bin/sh
  
  zenity --forms --title="Add Friend" \
  --text="Enter information about your friend." \
  --separator="," \
      --add-entry="First Name" \
      --add-entry="Family Name" \
      --add-entry="Email" \
      --add-calendar="Birthday" &gt;&gt; addr.csv
  
  case $? in
      0)
          echo "Friend added.";;
      1)
          echo "No friend added."
      ;;
      -1)
          echo "An unexpected error has occurred."
      ;;
  esac
  </code></pre>
  
  <p>How would I initialize First Name, Last Name, etc. before displaying the window?</p>