Button - WriteContainer
For the "Save" and "Delete" button actions, at least one WriteContainer must be selected. The action is then applied to the exact data contained in the WriteContainer. This allows different sections of a page to be saved separately, each with its own button.
Add Container
Opens a dialog box where a WriteContainer can be selected.
Here, you can select the desired WriteContainer.
Then click "OK" to save the changes and close the dialog box.
Delete Container
Deletes the reference to the currently selected WriteContainer.
Move up / down
Changes the order of the selected WriteContainers.