From The Document Foundation Wiki
- Used for paragraphs that places a frame for a graphic in the horizontal center of a paragraph. This type of paragraph does not contain any text and is used to position the graphic frame and the figure caption. It is to be used for all graphics. The following paragraph style is Text Body.
- Used for all captions and is positioned below a figure, which is the default setting, using Insert > Caption. Figure captions are automatically numbered using the category Figure.
- This frame style is the default style for the frame when a Caption is added to a graphic. It is aligned centrally for horizontal placement when inserted next to the Figure paragraph style. Anchor the frame to the Figure paragraph style using the option Anchor as Character.