1 <chapter id="cha-checklist-element">
3 Things to check when writing an element
6 Make sure the state of an element gets reset when going to NULL.
7 Ideally, this should set all object properties to their original state.
8 This function should also be called from _init.
11 <<chapter id="cha-checklist-filter">
13 Things to check when writing a filter
18 <chapter id="cha-checklist-srcsink">
20 Things to check when writing a source or sink