| NOTE 56 |
| It will, therefore, cause a line break in a paragraph even if the display-group has no content. |
| • coalesce-id: is a string specifying the coalesce-id of the flow object, or #f if the flow object has no coalesce-id. This characteristic is not inherited. The default value is #f. If the areas from two or more flow objects with the same coalesce-id are flowed into the same top-float, bottom-float, or footnote zone of a column-set area, then the areas from the second and subsequent such flow objects shall be discarded. A value other than #f is allowed for this characteristic only if the flow object is flowed into a top-float, bottom-float, or footnote zone of a column-set. |
| • position-preference: is either #f or one of the symbols top or bottom. This applies if the flow object is directed into a port on a column-set-sequence flow object that is flowed into both the top-float and bottom-float zones of a column-subset and indicates whether the areas from this flow object may be flowed into only one of the zones. This characteristic is not inherited. The default value is #f. |
| • space-before: is an object of type display-space specifying space to be inserted before, in the placement direction, the areas produced by the flow object. This characteristic is not inherited. The default is for no space before to be inserted. |
| • space-after: is an object of type display-space specifying space to be inserted after, in the placement direction, the areas produced by the flow object. This characteristic is not inherited. The default is for no space after to be inserted. |
| • keep-with-previous?: is a boolean specifying whether the flow object shall be kept in the same area as the previous flow object. This characteristic is not inherited. The default value is #f. |
| • keep-with-next?: is a boolean specifying whether the flow object shall be kept in the same area as the next flow object. This characteristic is not inherited. The default value is #f. |
| • break-before: is #f or one of the symbols page, page-region, column, or column-set specifying that the flow object shall start an area of that type. This characteristic is not inherited. The default is #f. |
| • break-after: is #f or one of the symbols page, page-region, column, or column-set specifying that the flow object shall end an area of that type. This characteristic is not inherited. The default is #f. |
| • keep: is one of the following: |
| • #t meaning that the areas produced by this flow object shall be kept together within the smallest possible area. |
| • the symbol page indicating that the areas produced by the flow object shall lie within the same page; in this case, the flow object shall have an ancestor flow object of class page-sequence. |
| • the symbol column-set indicating that the areas produced by the flow object shall lie within the same column set; in this case, the flow object shall have an ancestor of class column-set-sequence. |
| • the symbol column indicating that the areas produced by the flow object shall lie within the same column set, and that the first column that each area spans in the column set shall be the same. |
| • #f indicating that this characteristic is to be ignored. |
| • may-violate-keep-before?: is a boolean which, if true, specifies that constraints imposed by the keep: characteristics of ancestor flow objects on the relative positioning of this flow object and its previous flow object may not be respected. This characteristic is not inherited. The default value is #f. |
| • may-violate-keep-after?: is a boolean which, if true, specifies that constraints imposed by keep: characteristics of ancestor flow objects on the relative positioning of this flow object and its next flow object may not be respected. This characteristic is not inherited. The default value is #f. |