<P> A software vendor delineates the specific terms of use in an end - user license agreement ( EULA ) . The user may agree to this contract in writing , interactively on screen ( clickwrap ) , or by opening the box containing the software ( shrink wrap licensing ) . License agreements are usually not negotiable . Software patents grant exclusive rights to algorithms , software features , or other patentable subject matter , with coverage varying by jurisdiction . Vendors sometimes grant patent rights to the user in the license agreement . The source code for a piece of software is routinely handled as a trade secret . Occasionally , software is made available with fewer restrictions on licensing or source - code access ; such software is known as `` free '' or `` open - source . '' </P>
<P> A software vendor delineates the specific terms of use in an end - user license agreement ( EULA ) . The user may agree to this contract in writing , interactively on screen ( clickwrap ) , or by opening the box containing the software ( shrink wrap licensing ) . License agreements are usually not negotiable . Software patents grant exclusive rights to algorithms , software features , or other patentable subject matter , with coverage varying by jurisdiction . Vendors sometimes grant patent rights to the user in the license agreement . The source code for a piece of software is routinely handled as a trade secret . Occasionally , software is made available with fewer restrictions on licensing or source - code access ; such software is known as `` free '' or `` open - source . '' </P>
which type of software has no restrictions from the copyright holder and can be modified
which type of software has no restrictions from the copyright holder and can be modified
`` free '' or `` open - source . ''
`` free '' or `` open - source . ''