section.level4.properties attribute set
section.level4.properties Properties for level-4 sections

## Description

The properties that apply to the containing block of a level-4 section, and therefore apply to the whole section. This includes sect4 elements and section elements at level 4.

For example, you could start each level-4 section on a new page by using:

    <xsl:attribute-set name="section.level4.properties">
      <xsl:attribute name="break-before">page</xsl:attribute>
    </xsl:attribute-set>

This attribute set inherits attributes from the general section.properties attribute set.