6Short Forms Without Confusion

A paragraph cites Brown, then Anderson, then says “Id. at 495.” The writer intended to return to Brown. The reader follows the immediate reference to Anderson and cannot find the proposition. The writer saved a few words by losing the source.

Use case-name short forms; apply the immediately-preceding-source requirement for id.; recognize interruption and ambiguity; distinguish supra from case short forms; and audit short references after moving paragraphs.

A full citation establishes an authority's identity. A short form relies on an earlier identification that remains clear to the reader. It is not a substitute for collecting complete source information. Preserve the full source card in your research records even when your final paragraph uses only a name, volume, reporter, and pinpoint.

For a case already identified, a named short form ordinarily retains a distinctive party name, reporter volume, reporter, and an at-pinpoint. Indigo also supplies reporter-only and id. forms in suitable contexts. Our house preference favors a distinctive name after interruption because that makes the source easier to audit. This preference does not create a court rule requiring a name in every short form.

Full citation: Brown v. Bd. of Educ., 347 U.S. 483, 495 (1954).

Named short form: Brown, 347 U.S. at 495.

The short form does not repeat the first page as though it were another pinpoint. It also does not use supra to refer back to the case. The name must remain sufficiently distinctive in the document's actual context. If two cited cases share that name, use more identifying information or repeat a full citation.

Id. refers to the immediately preceding cited authority under the applicable convention. The reference must be to one identifiable source. If the location is unchanged, Id. can stand alone; a changed location requires the appropriate pinpoint. Do not add a pinpoint unless the source actually has that page, paragraph, or section.

Capitalization depends on placement. Id. begins a citation sentence; id. may occur in an embedded citation context. Italicize the abbreviation and its period. The comma or other surrounding punctuation follows the document's citation-sentence or clause pattern.

After a citation to several authorities, an id. reference can be ambiguous. It is not a general instruction to choose whichever source the author had in mind. Nor does id. jump backward over an intervening authority to a preferred source. A cross-reference that forces a reader to reconstruct the author's mental sequence has failed its purpose.

Editing is a special danger. Moving a paragraph can change the source immediately before id. without changing any characters in the citation. A citation that was sound on Tuesday can refer to a different decision after Wednesday's reorganization. Treat every id. as a context-dependent field during the final document audit.

First: “The Court rejected segregation in public education. Brown v. Bd. of Educ., 347 U.S. 483, 495 (1954).” Next: “The opinion describes separate educational facilities as inherently unequal. Id.” This sequence cites the same decision and passage. The second citation's identity is clear.

Insert an Anderson citation between those two sentences. The second Id. now follows Anderson, not Brown. Repair it to Brown, 347 U.S. at 495. Repeating the full Brown citation is also acceptable when useful to the reader. Do not preserve the old Id. merely because Brown appears somewhere earlier on the page.

The sentence's proposition still needs verification. A named short form solves identification; it does not prove that the pinpoint supports the sentence. Both tasks remain necessary.

Supra means above. Under Indigo's baseline, it supports certain secondary-source cross-references and other eligible materials; do not use it for cases, statutes, constitutions, regulations, Restatements, or model codes. An unusually long case name may need an introduced short name, but that is distinct from permission to use supra.

A book can use an author-based supra reference when an earlier full citation establishes the source and the surrounding context supplies a clear link. A case normally uses its source-specific short form. A statute normally uses its title/code/section or another authorized short form. Do not learn one convenient cross-reference and apply it to every source category.

In practitioner documents, a reference such as “Author, supra, at 20” must actually point to an earlier full citation. Academic note-number systems have their own conventions. This handbook does not assume the document has law-review footnotes. If two works by the same author appear, a surname alone may be insufficient; use a short title or repeat enough information to distinguish them.

Infra points forward and should be used sparingly for internal discussion. A reader who needs the source now should not have to wait for an unidentified citation later. Our chapter links are navigation devices, not substitutes for authority citations.

Choose a name that lets a reader recover the correct full citation. Avoid a generic governmental party name when the opposing name is more distinctive. A word that seemed distinctive in one chapter may be shared by several cases in the complete document. Check uniqueness against the whole document rather than a paragraph alone.

When discussing the same case at a different page, retain the source identity and change the pinpoint. If the proposition spans two nonconsecutive pages, identify both locations accurately. When the source is a neutral-citation opinion, use its paragraph pattern rather than importing a reporter-page at form indiscriminately. Source-specific short forms are taught in the corresponding chapters.

An authority mentioned only inside the previous citation’s explanatory parenthetical or history does not necessarily replace its principal source for the id. analysis. Indigo R15 explains this exception to its strict context rule. Distinguish that subordinate mention from a string citation identifying multiple principal authorities. Our clear-name preference still helps when the final context is uncertain; it is not a claim that every parenthetical forbids id.

Before shortening, ask: Has this source been fully identified? Is the proposed short form permitted for this source type? Can this reader locate it unambiguously? Does the pinpoint now support the sentence? For id., add: What is the immediately preceding cited authority after all edits?

Fictional training example — not legal authority. A draft paragraph first cites Vale v. Harbor, 12 Fiction Rep. 100, 104 (Harbor 2024). Its next citation is Id. at 105. A later sentence cites N. Pier v. Vega, 20 Fiction Rep. 200, 206 (Harbor Ct. App. 2023). The final sentence returns to Vale at 104 but uses Id. at 104. The invented names, reporters, courts, and locations serve only this tracing exercise. N. abbreviates North in the fictional business's name.

Read the citations in their actual order. The first Id. refers to Vale because Vale is the single immediately preceding principal source. The final Id. points to North Pier, the most recent principal citation, although the writer intended Vale. The number 104 does not restore the intended source. A source must be identified before its location can be interpreted. Repair the final reference with Vale, 12 Fiction Rep. at 104, assuming that form is otherwise clear in the document.

Next insert a second case into the first citation sentence. It now identifies Vale and North Pier as two principal authorities. The following Id. is no longer a dependable reference to one source under the taught rule. Replace it with a named short form for the intended case. The edit may seem small, but it changes the referential context. This is why short-form checking must follow the last substantive editing pass rather than precede it.

An authority mentioned in an explanatory parenthetical or history presents a more specific issue. Do not treat every subordinate citation as automatically creating the same problem as a second principal authority. Indigo's short-form discussion recognizes a distinction. Identify what the citation sentence chiefly cites and what the parenthetical merely discusses. When a reader could reasonably misunderstand the intended source, use a clear named short form rather than relying on the narrowest permissible construction.

Ambiguity can also arise without interruption. If a document discusses two different cases both shortened to Vale, the surname alone may not identify the intended opinion. Add the reporter component or use a more informative permitted name. If the document has only one such case and the full citation is nearby, a shorter form can work. The rule's purpose is a retrievable connection to the full source, not a competition to remove the most characters.

Copying a paragraph creates another risk. A paragraph beginning with Id. may have been clear in its original location because the previous paragraph supplied the source. In its new location, the reference may point elsewhere or nowhere. Search the moved paragraph's first citation and inspect what now immediately precedes it. The same check applies when combining sections written by different contributors or accepting an automated rewrite that rearranges sentences.

Maintain a small short-form audit after final assembly. Find each Id.; identify its actual antecedent; confirm that the antecedent is eligible and sufficiently singular; then inspect the new pinpoint. Find each named short form and locate its full citation. Find supra references and confirm that the source category permits them. These checks follow relationships across the document. A search that merely counts correctly italicized Id. occurrences cannot establish that any of them points to the right authority.

Indigo R15's discussion treats an intervening textual mention of another authority as a potential interruption, even when that mention has no reporter information. The rule does not count only visibly complete citations. Read the words between the prior citation and id. as well as the citation fields.

Fictional training example — not legal authority. A paragraph cites the invented Vale decision, then says “The Harbor Code supplies a different definition,” and finally uses Id. intending Vale. The code reference has introduced another authority. A clear named case short form or a repeated full citation removes the uncertainty. Adding a page number to Id. does not establish which source the writer intended.

The treatment differs for a source mentioned inside the principal citation's explanatory parenthetical. Indigo R15 expressly permits id. to continue referring to the principal source in that situation when the reference remains clear. Do not extend this exception to a new sentence naming a different authority or to a string citation containing two principal authorities. Distinguishing principal and subordinate references is essential to the rule.

Do not use id. for an appellate record reference such as R. at 22 under Indigo R6.2.2 and R26. Repeating R. at 22 is already short and preserves the source. For other litigation documents, R26 reserves id. for situations where it saves substantial space and remains clear. A declaration is therefore not automatically interchangeable with a judicial opinion for short-form purposes. Chapter 9 supplies document-specific models.

An id. chain can refer back through earlier id. citations, but its usefulness depends on how far the reader must trace. The Indigo discussion treats repetition of a full form after a heading, page break, or an extended chain as a reader-oriented choice; it does not establish a universal five-footnote limit for every practitioner document. Repeat a fuller identification when a section is likely to be read independently. Treat the full citation as part of the reader's access to the source, not as a one-time box checked somewhere in a long file.

Finally, changing a pinpoint from a page to a paragraph changes the locator syntax. Id. at 104 is a page form; Id. ¶ 14 and Id. § 8 are subdivision forms without at. Use the source's supplied coordinates. Shortening the citation must preserve its precise destination.