User's Manual

137
tive use in the most ordinary way, to print or display an announce-
ment including an appropriate copyright notice and a notice that
there is no warranty (or else, saying that you provide a warranty)
and that users may redistribute the program under these conditions,
and telling the user how to view a copy of this License. (Exception: if
the Program itself is interactive but does not normally print such an
announcement, your work based on the Program is not required to
print an announcement.)
These requirements apply to the modied work as a whole. If identi-
able sections of that work are not derived from the Program, and can be
reasonably considered independent and separate works in themselves,
then this License, and its terms, do not apply to those sections when you
distribute them as separate works. But when you distribute the same
sections as part of a whole which is a work based on the Program, the
distribution of the whole must be on the terms of this License, whose
permissions for other licensees extend to the entire whole, and thus to
each and every part regardless of who wrote it.
Thus, it is not the intent of this section to claim rights or contest your
rights to work written entirely by you; rather, the intent is to exercise the
right to control the distribution of derivative or collective works based
on the Program.
In addition, mere aggregation of another work not based on the Pro-
gram with the Program (or with a work based on the Program) on a vol-
ume of a storage or distribution medium does not bring the other work
under the scope of this License.
3. You may copy and distribute the Program (or a work based on it, under
Section 2) in object code or executable form under the terms of Sections
1 and 2 above provided that you also do one of the following:
a) Accompany it with the complete corresponding machine-readable
source code, which must be distributed under the terms of Sections
1 and 2 above on a medium customarily used for software inter-
change; or,
b) Accompany it with a written oer, valid for at least three years, to
give any third party, for a charge no more than your cost of physi-
cally performing source distribution, a complete machine-readable
copy of the corresponding source code, to be distributed under the
terms of Sections 1 and 2 above on a medium customarily used for
software interchange; or,