User's Manual

114
 versionsoftheGeneralPublicLicensefromtimetotime.Such
new versions will be similar in spirit to the present version, but
may dier in detail to address new problems or concerns.
 Eachversionisgivenadistinguishingversionnumber.Ifthe
ProgramspeciesaversionnumberofthisLicensewhich
appliestoitand“anylaterversion”,youhavetheoptionof
followingthetermsandconditionseitherofthatversionorof
anylaterversionpublishedbytheFreeSoftwareFoundation.If
theProgramdoesnotspecifyaversionnumberofthisLicense,
you may choose any version ever published by the Free
SoftwareFoundation.
10.IfyouwishtoincorporatepartsoftheProgramintootherfree
programs whose distribution conditions are dierent, write to
theauthortoaskforpermission.
 ForsoftwarewhichiscopyrightedbytheFreeSoftware
Foundation,writetotheFreeSoftwareFoundation;we
sometimesmakeexceptionsforthis.Ourdecisionwillbe
guidedbythetwogoalsofpreservingthefreestatusofall
derivativesofourfreesoftwareandofpromotingthesharing
andreuseofsoftwaregenerally.