9.3.1 Categories of paragraph rules: primary and uses

There are two categories of paragraph rules: primary rules and uses rules. A primary rule defines a WML paragraph rule from scratch. The following example is the definition of a primary rule named L1BulletItem:

PARAGRAPH "L1BulletItem" TYPE List
{
  LEVEL 1
  KIND Bullet
  ACTIONS
  {
    write(*,listitem(paragraph(text())));
  }
}

A uses rule specifies that one paragraph rule uses the definition of another rule. The other rule is typically a primary rule. The following example is the definition of a uses rule named Bullet, which uses a primary rule named L1BulletItem:

PARAGRAPH "Bullet" TYPE List { USES "L1BulletItem" }