Identifies how a section heading should be displayed (which may or may not correspond to its real position in the hierarchy)
This attribute should be used to record the needed display level for a section heading. Usually there will be a one-to-one correspondence the display level and the hierarchichal level of a section heading, but it is possible for the two to differ.
| Value | Meaning |
|---|---|
| subsect1 | Display the title as though this were a first level subsection (in previous DTD, “subsect1”) |
| subsect2 | Display the title as though this were a second level subsection (in previous DTD, “subsect2”) |
| subsect3 | Display the title as though this were a third level subsection (in previous DTD, “subsect3”) |
| subsect4 | Display the title as though this were a fourth level subsection (in previous DTD, “subsect4”) |
| Restriction: This attribute may be specified if the element is used. | |