An example planner file is given below. You'll notice that Planner does not have a well-defined user interface. Rather, it's free-form and open, allowing you to adapt it to your preferences.
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* Tasks
#B _ Join http://mail.gna.org/listinfo/planner-el-discuss/ (TaskPool)
#B _ Browse through the Planner info manual (TaskPool)
#B _ Add (plan) to the end of my ~/.emacs
#B X Learn how to schedule a task (TaskPool)
* Schedule
18:00 | 19:00 | Learn how to use Planner
* Notes
Notes are free-form. You can put anything you want into this.
.#1 This is note number one
Notes on note number one!
.#2 This weird ".#2" syntax is used for allout.el enumerated lists
It makes using allout-mode very handy.