LaTeX can be used to typeset many kinds of different documents, but typesetting chemical reactions is esthetically not very pleasing because LaTeX's own arrows \rightarrow, \leftarrow and \rightleftharpoons which you might use for this purpose are too short and the arrow heads are not like the "standard" ones you will find in books or journals on chemistry. The macro chemarrow.sty in conjunction with the font arrow.mf is supposed to make the typesetting of chemical reaction schemes in LaTeX easier and especially nicer looking. This bundle consists of a font (available as metafont source, metapost source, and generated type 1 versions), and a package to use it. The arrows in the font are designed to look more like those in chemistry text-books than do Knuth's originals.
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.