User's Manual

97
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