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                                                       922
             CHAPTER 10                                                         Document Interchange



             Layout Attributes for BLSEs

             Table 10.31 describes layout attributes that apply only to block-level structure ele-
             ments (BLSEs).

             Note: Inline-level structure elements (ILSEs) with a Placement attribute other than
             the default value of Inline are treated as BLSEs and hence are also subject to the
             attributes described here.

               TABLE 10.31 Additional standard layout attributes specific to block-level structure
                                                  elements
KEY                 TYPE           VALUE

SpaceBefore         number         (Optional; not inheritable) The amount of extra space preceding the before
                                   edge of the BLSE, measured in default user space units in the block-progres-
                                   sion direction. This value is added to any adjustments induced by the
                                   LineHeight attributes of ILSEs within the first line of the BLSE (see “Layout
                                   Attributes for ILSEs” on page 926). If the preceding BLSE has a SpaceAfter at-
                                   tribute, the greater of the two attribute values is used. Default value: 0.
                                   Note: This attribute is disregarded for the first BLSE placed in a given reference
                                   area.

SpaceAfter          number         (Optional; not inheritable) The amount of extra space following the after edge
                                   of the BLSE, measured in default user space units in the block-progression
                                   direction. This value is added to any adjustments induced by the LineHeight
                                   attributes of ILSEs within the last line of the BLSE (see “Layout Attributes for
                                   ILSEs” on page 926). If the following BLSE has a SpaceBefore attribute, the
                                   greater of the two attribute values is used. Default value: 0.
                                   Note: This attribute is disregarded for the last BLSE placed in a given reference
                                   area.

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