User's Manual

110
2. YoumaymodifyyourcopyorcopiesoftheProgramorany
portionofit,thusformingaworkbasedontheProgram,and
copy and distribute such modications or work under the
termsofSection1above,providedthatyoualsomeetallof
these conditions:
a) You must cause the modied les to carry prominent
noticesstatingthatyouchangedthelesandthedateof
any change.
b) You must cause any work that you distribute or publish, that
inwholeorinpartcontainsorisderivedfromtheProgram
oranypartthereof,tobelicensedasawholeatnocharge
toallthirdpartiesunderthetermsofthisLicense.
 c) Ifthemodiedprogramnormallyreadscommands
interactively when run, you must cause it, when started
runningforsuchinteractiveuseinthemostordinaryway,to
print or display an announcement 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.