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mention that root's system-wide install could shadow package files
== Check for shadowing formats and macros ==
These installation instructions describe a system-wide install. But individual users may have followed the old directions on this page and (sorry!) made a per-user ConTeXt installation; or as root you may have done a system-wide install in, for example, <tt>/usr/local/share/texmf</tt> or other directory that shadows <tt>/usr/share/texmf</tt>. Those will shadow In either case, the system-wide install. If thatfrom the packages won's what they want to do, no problemt be seen.
If individual users prefer to shadow the system-wide install and to run their downloaded versions, that's fine. But if they want to use the system-wide install (recommended except for those who are testing Hans's latest versions...), then there are two issues.
The first issue is old format files. If a user has format files in <tt>~/.texmf-var/web2c/<i>engine</i></tt> where <i>engine</i> is typically <tt>pdfetex</tt>, then these will shadow the ones installed by the context package. So the user should delete the ConTeXt-related ones, such as <tt>cont-*.fmt</tt>, <tt>mptopdf.fmt</tt>, and <tt>metafun.mem</tt>.
