title: Django ListField with add and remove
body: <p>The below link specifies how to create a list-field in Django.</p>
  
  <p><a href="https://stackoverflow.com/questions/5216162/how-to-create-list-field-in-django">How to create list field in django</a></p>
  
  <p>My question; how to add, remove items to this field? if in case that's possible. I want to be able to add to and remove from this field of a Model's instance afterwards. If not possible please someone suggest me an alternative.</p>