\subsection{Modify and the Work Based on the Program}

GPLv2 included a defined term, ``work based on the Program'', but also used

the term ``modify'' and ``based on'' throughout the license.  GPLv2's ``work

based on the Program'' definition made use of a legal term of art,

``derivative work'', which is peculiar to USA copyright law.  However,

``work based on the Program'' definition historically came not primarily from

readers outside the USA, but from those within it\footnote{The FSF noted in

  that it did not generally agree with these views, and expressed puzzlement

  by the energy with which they were expressed, given the existence of many

  other, more difficult legal issues implicated by the GPL.  Nevertheless,

  the FSF argued that it made sense to eliminate usage of local copyright

but it also makes clear that, under the copyright laws of a given country,

``propagation'' may include other activities as well.

Thus, propagation is defined by behavior, and not by categories drawn from

some particular national copyright statute.  This helps not only with

internationalization, but also factually-based terminology aids in

\subsection{Convey}

Further to this point, a subset of propagate --- ``convey'' --- is defined.

Conveying includes activities that constitute propagation of copies to

others.  As with the definition of propagate, GPLv3 thus addresses transfers