After fetchmail is has gotten jpollman's mail, the script becomes bmote via su and runs fetchmail to get his mail. Crond is the daemon that is started when your machine boots, and so, is always running in the background. It reads the crontab files every minute to see if anything needs to run. Leave all the header line alone and delete the program lines. Ranges of numbers are allowed.
Ranges are two numbers separated with a hyphen.
The specified range is inclu- sive. To add it, just type it in as a single line with full path.