Structured document tags
PHPWord structured document tags (SDTs/content controls) are mapped to native OpenDocument form controls by the ODText writer:
plainTextbecomesform:text.comboBoxbecomesform:combobox.dropDownListbecomesform:listbox.datebecomesform:date.
Values and choice labels are written when the corresponding ODF control supports them. Word SDTs have no exact ODF equivalent, so metadata and behavior such as locking and tags do not round-trip exactly.