work is called a 'modified version' of the earlier work or a work 'based on' the earlier
work.
A 'covered work' means either the unmodified Program or a work based on the
Program.
To 'propagate' a work means to do anything with it that, without permission, would
make you directly or secondarily liable for infringement under applicable copyright
law, except executing it on a computer or modifying a private copy. Propagation
includes copying, distribution (with or without modification), making available to the
public, and in some countries other activities as well.
To 'convey' a work means any kind of propagation that enables other parties to make
or receive copies. Mere interaction with a user through a computer network, with no
transfer of a copy, is not conveying.
An interactive user interface displays 'Appropriate Legal Notices' to the extent that it
includes a convenient and prominently visible feature that (1) displays an appropriate
copyright notice, and (2) tells the user that there is no warranty for the work (except
to the extent that warranties are provided), that licensees may convey the work
under this License, and how to view a copy of this License. If the interface presents a
list of user commands or options, such as a menu, a prominent item in the list meets
this criterion.
1. Source Code.
The 'source code' for a work means the preferred form of the work for making
modifications to it. 'Object code' means any non-source form of a work.
A 'Standard Interface' means an interface that either is an official standard defined
by a recognized standards body, or, in the case of interfaces specified for a particular
programming language, one that is widely used among developers working in that
language.
The 'System Libraries' of an executable work include anything, other than the work
as a whole, that (a) is included in the normal form of packaging a Major Component,
but which is not part of that Major Component, and (b) serves only to enable use of
the work with that Major Component, or to implement a Standard Interface for
which an implementation is available to the public in source code form. A 'Major