In the example, repeated application with different indentation levels is shown:
{{ItSS1923|level=0|Cleeve court. Quiller-Couch, A. T.}}
{{ItSS1923|level=0|'''Clemens, Samuel Langhorne (Mark Twain pseud.)''' 1835-1910}}
{{ItSS1923|level=1|Adam's diary. ''See'' Clemens, S. L. Extracts from Adam's diary}}
{{ItSS1923|level=1|Adventure of Huckleberry Finn; with an account of the famous Grangerford-Shepherdson feud}}
{{ItSS1923|level=2|in=In|Cent 29:268}}
{{ItSS1923|level=1|At the appetite cure}}
{{ItSS1923|level=2|in=In|Writings [Harper] v 23}}
{{ItSS1923|level=2|Cosmopol 25:425}}
{{ItSS1923|level=1|Aurelia's unfortunate young man}}
{{ItSS1923|level=2|in=In|Writings [Harper] v 19}}
{{ItSS1923|level=2|Writings [Amer Pub Co] v 19}}
{{ItSS1923|level=2|Sketches, new and old}}
Cleeve court. Quiller-Couch, A. T.
Clemens, Samuel Langhorne (Mark Twain pseud.) 1835-1910
Adam's diary. See Clemens, S. L. Extracts from Adam's diary
Adventure of Huckleberry Finn; with an account of the famous Grangerford-Shepherdson feud