User's Guide

You may charge any price or no price for each copy that you convey, and you may offer support
or warranty protection for a fee.
5. Conveying Modified Source Versions.
You may convey a work based on the Program, or the modifications to produce it from the
Program, in the form of source code under the terms of section 4, provided that you also meet
all of these conditions:
a) The work must carry prominent notices stating that you modified it, and giving a relevant
date.
b) The work must carry prominent notices stating that it is released under this License and any
conditions added under section 7. This requirement modifies the requirement in section 4 to
“keep intact all notices”.
c) You must license the entire work, as a whole, under this License to anyone who comes into
possession of a copy. This License will therefore apply, along with any applicable section 7
additional terms, to the whole of the work, and all its parts, regardless of how they are
packaged. This License gives no permission to license the work in any other way, but it does
not invalidate such permission if you have separately received it.
d) If the work has interactive user interfaces, each must display Appropriate Legal Notices;
however, if the Program has interactive interfaces that do not display Appropriate Legal Notices,
your work need not make them do so.
A compilation of a covered work with other separate and independent works, which are not by
their nature extensions of the covered work, and which are not combined with it such as to form
a larger program, in or on a volume of a storage or distribution medium, is called an “aggregate”
if the compilation and its resulting copyright are not used to limit the access or legal rights of the
compilation's users beyond what the individual works permit. Inclusion of a covered work in an
aggregate does not cause this License to apply to the other parts of the aggregate.
6. Conveying Non-Source Forms.
You may convey a covered work in object code form under the terms of sections 4 and 5,
provided that you also convey the machine-readable Corresponding Source under the terms of
this License, in one of these ways:
a) Convey the object code in, or embodied in, a physical product (including a physical
distribution medium), accompanied by the Corresponding Source fixed on a durable physical
medium customarily used for software interchange.
b) Convey the object code in, or embodied in, a physical product (including a physical
distribution medium), accompanied by a written offer, valid for at least three years and valid for
as long as you offer spare parts or customer support for that product model, to give anyone who
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