A family of Microsoft word processing software products for creating web, email, and print documents.
If you tick the check box "Automatically update" for a style, the following happens:
- If you change the paragraph formatting of one paragraph using that style, the change will be applied to the style itself, and hence to other paragraphs using that style. For example if you center one Heading 1 paragraph, Center will become a property of the Heading 1 style, and other Heading 1 paragraphs will become centered too.
- If you change the character formatting of an entire paragraph using that style, the change will be applied to the style itself, and hence to other paragraphs using that style. This won't work if you apply character formatting to part of a paragraph only.
If you clear the check box "Automatically update", changing the formatting of a paragraph won't affect the style. If you want to modify the style, you have to do so explicitly. In most situations, this is to be preferred in my opinion.