Editorial Style Guide

Lists

In general: Use a line space, or partial line space, before and after all stacked lists. In the following examples, a six-point line space precedes and follows the lists.

Lists within Sentences

Within a sentence, separate items in a list with commas (see the Punctuation section concerning commas in lists) or with semicolons if the items in the list include commas.

Vertical Lists

Introduce items in a vertical list with numbers only when the order matters. Otherwise, use bullets or another typographical symbol.

    In case of a building evacuation:
  1. Make sure all persons have left your classroom.
  2. Close the classroom door behind you.
  3. Leave the building via the nearest stairwell.

If any of the items in a vertical list are complete sentences, punctuate all items in the list with periods. If no items are sentences, follow each with a comma and end the list with a period if the list completes a sentence, or omit punctuation at the end of each item, including the last one. (Be consistent within a document in how you treat similar types of lists.)

If the sentence introducing the list is a complete sentence, it can end in a period or a colon, whichever seems appropriate (following and as follows require a colon). If the introductory material is not a complete sentence, use the punctuation mark that’s appropriate for the context, whether that's a comma, semicolon, dash, or nothing at all.

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