Use to end declarative or imperative sentences and in some abbreviations.
Use only one space after the period at the end of a sentence.
Don't use end punctuation in headlines, headings, subheadings, UI affordance labels, or list items that are not complete sentences.
Do
In the widget you can edit:
- Numbers
- Letters
- Other characters
In the widget you can:
- Edit numbers.
- Edit letters.
- Edit other characters.
Note The first list would be preferred for readability.