If you do not suppress pointer validation with the
‘--no-validate’ option or the
@novalidate command in the
source file (see Use TeX),
makeinfo will check the
validity of the Texinfo file.
Most validation checks are different depending on whether node pointers are explicitly or implicitly determined. With explicit node pointers, here is the list of what is checked:
With implicit node pointers, the above error cannot occur, as such.
(Which is a major reason why we recommend using this feature of
makeinfo, and not specifying any node pointers yourself.)
makeinfo checks that the tree constructed from the
document’s menus matches the tree constructed from the sectioning
commands. For example, if a chapter-level menu mentions nodes
n1 and n2, in that order, nodes n1 and n2 must
be associated with
@section commands in the chapter.
Finally, with both explicit and implicit node pointers,
makeinfo checks that every node except the ‘Top’ node is
referenced in a menu.