Nested templates and partial forms

Nested templates are widely used. For example:

(Example taken from Yellow Submarine article of Wikipedia.)

Note usage of Extra chronology template.

Unfortunately, Semantic Forms does not support nested templates now, so filling such a template with form is not possible. This limitation can be worked around by flattening the template (making the template flat).

Infobox album form allows editing "main" fields — Name and Type:

Additional Infobox album extra chronology partial form allows editing "additional fields" — Extra chronology Artist, Extra chronology Type, etc:

…

Infobox album template uses all the fields, passing Extra chronology … fields to Extra chronology template:

Extra chronology template utilizes its arguments and provides a link for editing them:

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