The "build-index" pragma is used to instruct the BLUE-PROCESSOR to assemble the topics of the manuscript's indexmarks into a back-matter index.
The syntax for the build-index pragma consists of:
An exclamation point !
The keyword build-index
A junctors attribute, (yes or no), to specify whether or not hyperlinks should be created from the body-matter topics to the built Index.
The default value for the junctors attribute is yes, which instructs the builder to create hyperlinks from the body-matter location to the built index. But regardless of the junctors setting, each topic in the back-matter will always be hyperlinked to the corresponding locations in the body-matter where they occurred.
Here is what a build-index pragma looks like within the body of a manuscript.