Web Settings
A web setting is a setting used to specify a document-level property that is applicable when saving a web page as a WordprocessingML document, or when saving a WordprocessingML document as a webpage. Thus, if a given WordprocessingML document was not created from a web page, and will never become a web page, no web settings are needed within the document. If they are needed, web settings are stored in the Web Settings part.
Consider a document in which the web setting <allowPNG>
is applied. As a web setting this element specifies if the PNG graphics format will be used for persisting images when saving the document as a web page. Specifically, if the PNG graphics format will be used when saving a document as a web page, this requirement would be specified by adding the following WordprocessingML to the settings part:
<w:webSettings> <w:allowPNG /> </w:webSettings>
If this element is omitted, then the JPEG graphics format will be used for persisting images when saving the document as a web page.