MRTG Configuration

While studying the lbelow link for MRTG configuration, I have some questions :
http://www.cyberciti.biz/nixcraft/linux/docs/uniqlinuxfeatures/mrtg/mrtg_config_step_5.php

#1 cfgmaker --global 'WorkDir: /var/www/html/mymrtg' --output /etc/mrtg/mymrtg.cfg public@localhost (Create MRTG Configuration)
Q1 : cfgmaker will generate the mymrtg.cfg under server localhost:/etc/mrtg, correct ?

#2 indexmaker --output=/var/www/html/mymrtg/index.html /etc/mrtg/mymrtg.cfg (Create a default index page for MRTG Configuration)
Q2 : Indexmaker will create index.html using the configuration /etc/mrtg/mymrtg.cfg, correct ?

#3  cp -av /var/www/html/mrtg/*.png   /var/www/html/mymrtg/ (copy tingy png file to mrtg path)
    Does it mean some information created in #2 is missing in the index.html ?

# */5 * * * * /usr/bin/mrtg /etc/mrtg/mymrtg.cfg --logging /var/log/mrtg.log  (Create crontab for mrtg graph / images get generated every 5 min.)
   Schedule to generate the mymrtg.cfg configuration. To my understanding, mymrtg.cfg is only the configuration without any data in it. Where does those living data stay such that #2 Indexmaker can generate the index.html ? Do I misunderstanding anything ? Tks