Complex sentence: Generally, either... or the or templates should be used; templates with quotation marks (especially including decorative ones such as those provided by the template) are reserved for pull quotes and should not be used for quotations.
Split into simpler sentences: Generally, either... or the or templates should be used. Templates with quotation marks, especially decorative ones, such as those provided by the template, are reserved for pull quotes and should not be used for quotations.