Occasionally you will see a cross-reference in the text. Cross-references look like (A) in the printed manual, and like (B) in the on-line manual:
...see also Section 1.3 [int-dir], page 11 (A)
and
...see also {manual(int-dir)} (B)
If you are not using Emacs, then you should type the following goal in order to follow this cross-reference.
| ?- manual(int-dir).
Under Emacs: There is a more convenient way to do this: type
x to move the cursor to the front of the cross-reference, then
type <RET> to display the cross-referenced text.