User's Manual

99
freeprograms;andthatyouknowyoucandothesethings.
Toprotectyourrights,weneedtomakerestrictionsthatforbidanyone
todenyyoutheserightsortoaskyoutosurrendertherights.These
restrictionstranslatetocertainresponsibilitiesforyouifyoudistribute
copiesofthesoftware,orifyoumodifyit.
Forexample,ifyoudistributecopiesofsuchaprogram,whethergratis
orforafee,youmustgivetherecipientsalltherightsthatyouhave.
Youmustmakesurethatthey,too,receiveorcangetthesourcecode.
Andyoumustshowthemthesetermssotheyknowtheirrights.
Weprotectyourrightswithtwosteps:(1)copyrightthesoftware,and
(2)oeryouthislicensewhichgivesyoulegalpermissiontocopy,
distributeand/ormodifythesoftware.
Also, for each author’s protection and ours, we want to make certain
thateveryoneunderstands thatthereis no warrantyforthis free
software.Ifthesoftwareismodiedbysomeoneelseandpassedon,
wewantitsrecipientstoknowthatwhattheyhaveisnottheoriginal,
sothat anyproblemsintroduced byotherswill notreectonthe
original authors’ reputations.
Finally,anyfreeprogramisthreatenedconstantlybysoftwarepatents.
We wish to avoid the danger that redistributors of a free program
willindividuallyobtainpatentlicenses,ineectmakingtheprogram
proprietary.Topreventthis,wehavemadeitclearthatanypatentmust
belicensedforeveryone’sfreeuseornotlicensedatall.
Theprecisetermsand conditionsforcopying,distributionand
modification follow.
Terms & conditions for copying, distribution, & modification
0. ThisLicenseappliestoanyprogramorotherworkwhichcontainsa
noticeplacedbythecopyrightholdersayingitmaybedistributed
under the terms of this General Public License. The “Program”,
below,referstoanysuchprogramorwork,anda“workbased
onthe Program”means eithertheProgramoranyderivative
workundercopyrightlaw:thatistosay,aworkcontainingthe