When an environment is left open, LaTeX gives an error at the end of the document. However it only informs about the first of them, while the rest are shown with meaningless errors: (\end occurred inside a group at level N) This package replaces these errors with more useful messages which show which environments (in reverse order) were not closed. There are no user macros: just use the package.
Binary packages can be installed with the high-level tool pkgin (which can be installed with pkg_add) or pkg_add(1) (installed by default). The NetBSD packages collection is also designed to permit easy installation from source.
The pkg_admin audit command locates any installed package which has been mentioned in security advisories as having vulnerabilities.
Please note the vulnerabilities database might not be fully accurate, and not every bug is exploitable with every configuration.
Problem reports, updates or suggestions for this package should be reported with send-pr.