DEVELOPMENT VERSION: This is an experimental DALICC environment. Features, data and APIs may change or be reset without notice. A stable version of this service, with a potentially different feature set, will be made available soon at dalicc.net.

2026

Archived version 1 of 2. This is how the model read before it was corrected. It is shown read only. The current version is here.

LaTeX Project Public License, Version 1.1

Also known as LPPL 1.1, LPPL-1.1, LaTeX Project Public License 1.1, LaTeX Project Public License v1.1.

Commercial use
allowed
Share alike
not required
Attribution
required (keep the copyright and license notices)
Go to the current version Download version 1 JSON-LD Turtle RDF/XML
Canonical URI https://dalicc.net/licenselibrary/LPPL-1.1

Permissions

  • Add statement from the text Attaching terms, notices or statements of one's own to the work or to one's modifications when passing it on.
  • Change license from the text Replacing the license of the work, or of an adaptation, with another license, or changing its terms.

    Duties

    • Use a compliant license from the text Choosing a replacement license that stays compliant with the terms of the original license.
  • Charge distribution fee from the text Charging a fee for the act of providing a copy of the work to someone else.
  • Commercial use from the text Using the work to generate income, directly or indirectly, for example by selling it or by using it in advertising.
  • Derivative works from the text Distributing an adaptation of the work and making it available to the public.
  • Derive from the text Creating a new work from the work, such as a translation, adaptation or arrangement of it or of a part of it.

    Duties

    • Attribution from the text Giving credit to the copyright holders or authors of the work, in the form the licensor asks for.
    • Modification notice from the text Marking a changed work as changed, saying how it differs from the original and keeping earlier notices of change.
    • Original version offer from the text Giving every recipient of a modified work a way back to the original: the unmodified version itself, a difference file, or instructions for obtaining it.
    • Rename from the text Giving a modified or derived work a name that tells it apart from the original.
  • Display from the text Showing the work to the public without making a copy the viewer keeps.
  • Distribute from the text Providing copies of the work to the public or to anyone else.

    Duties

    • Notice from the text Notice: keeping the license and copyright notices with every copy.
  • Grant use from the text Granting third parties the right to use the work.
  • Modified works from the text Distributing a modified version of the work that does not amount to a new, derivative work.
  • Modify from the text Altering the work, for example by updating it, without creating a new work; an alteration that creates a new work is Derive.

    Duties

    • Attribution from the text Giving credit to the copyright holders or authors of the work, in the form the licensor asks for.
    • Modification notice from the text Marking a changed work as changed, saying how it differs from the original and keeping earlier notices of change.
    • Original version offer from the text Giving every recipient of a modified work a way back to the original: the unmodified version itself, a difference file, or instructions for obtaining it.
    • Rename from the text Giving a modified or derived work a name that tells it apart from the original.
  • No-warranty notice from the text Attaching a notice that the work is provided without any warranty.
  • Present from the text Performing the work in public, including by broadcast or other communication to the public.
  • Reproduce from the text Making copies of the work in any form.

Prohibitions

  • Add limitation from the text Not permitted: Add limitation. Adding further limitations or restrictions to the license terms when passing the work on.
  • Promote from the text Not permitted: Promote. Using the name or trademarks of the licensor or of contributors to endorse or promote a product.

License-wide duties

This license states no duties that apply to the work as a whole.

Clauses

Warranty disclaimer

There is no warranty for The Program. Except when otherwise stated in writing, The Copyright Holder provides The Program `as is', without warranty of any kind, either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. The entire risk as to the quality and performance of The Program is with you. Should The Program prove defective, you assume the cost of all necessary servicing, repair, or correction.

Limitation of liability

In no event unless agreed to in writing will The Copyright Holder, or any author named in the files of The Program, or any other party who may distribute and/or modify The Program as permitted below, be liable to you for damages, including any general, special, incidental or consequential damages arising out of any use of The Program or out of inability to use The Program (including, but not limited to, loss of data, data being rendered inaccurate, or losses sustained by anyone as a result of any failure of The Program to operate with any other programs), even if The Copyright Holder or said author or said other party has been advised of the possibility of such damages.

Additional clauses

This license gives conditions under which The Program may be distributed and conditions under which modified versions of The Program may be distributed. Individual files of The Program may bear supplementary and/or superseding conditions on modification of themselves and on the distribution of modified versions of themselves, but *no* file of The Program may bear supplementary or superseding conditions on the distribution of an unmodified copy of the file. A distributor wishing to distribute a complete, unmodified copy of The Program therefore needs to check the conditions only in this license and nowhere else. Activities other than distribution and/or modification of The Program are not covered by this license; they are outside its scope. In particular, the act of running The Program is not restricted.

Info

Target asset types
Creative work (i.e. text, picture, sound, movie), Software
Region / jurisdiction
Worldwide
Validity
Perpetual
Source
https://spdx.org/licenses/LPPL-1.1.html
Legal code
https://www.latex-project.org/lppl/lppl-1-1.txt
This description is published under
https://dalicc.net/licenselibrary/CC-BY-4.0
Publisher
LaTeX3 Project
Attribution name
LaTeX3 Project
SPDX identifier
LPPL-1.1 on the SPDX license list
Version
1.1
DALICC identifier
LPPL-1.1

This record is published under CC BY 4.0. Credit it as: DALICC License Library, DALICC - Verein zur Förderung der Rechtssicherheit in der Datenbewirtschaftung, https://dalicc.net, CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). The license it describes belongs to its publisher.

History

This license model has 2 versions. Version 2 is the one served today; every earlier version keeps its own address, so a conclusion drawn from one of them can still be checked against it.

  1. Version 2 current2026-09-24 Giray Havur

    The changes since version 1 left endorsement to the default rule of the core dependency graph, recorded which sentence of the text each statement rests on and named the license the record itself is published under.

    View JSON-LD Turtle RDF/XML

    7 changes

    • removed prohibition dalicc:promote

      Manual edit The endorsement prohibition rested on no sentence of the text; the default rule for endorsement now supplies it.

    • changed permission dalicc:ChangeLicense with duties [dalicc:compliantLicense]

      was permission dalicc:ChangeLicense with duties [dalicc:compliantLicense]

      Manual edit The statement is marked as a library convention, family rule 15: Permissive records permit relicensing: the text does not state it in as many words. Its duty dalicc:compliantLicense is marked as a library convention, family rule 15: Permissive records permit relicensing.

    • changed permission odrl:derive with duties [cc:Attribution, dalicc:modificationNotice, dalicc:originalVersionOffer, dalicc:rename]

      was permission odrl:derive with duties [cc:Attribution, dalicc:modificationNotice, dalicc:originalVersionOffer, dalicc:rename]

      Manual edit Its duty cc:Attribution quotes "In the modified file, you must acknowledge the authorship and name of the original file, and the name (if any) of the program which contains it." Its duty dalicc:modificationNotice quotes "You must change any identification string in the file to indicate clearly that the modified file is not part of The Program." Its duty dalicc:originalVersionOffer quotes "(A) distribute a copy of The Program (that is, a complete, unmodified copy of The Program) together with the modified file; if your distribution of the modified file is made by offering access to copy the modified file from a designated place, then offering equivalent access to copy The Program from the same place meets this condition, even though third parties are not compelled to copy The Program along with the modified file;" Its duty dalicc:rename quotes "You must not distribute the modified file with the filename of the original file."

    • changed permission odrl:distribute with duties [cc:Notice]

      was permission odrl:distribute with duties [cc:Notice]

      Manual edit The statement now quotes the sentence of the licence text it rests on: "You may distribute a complete, unmodified copy of The Program. Distribution of only part of The Program is not allowed."

    • changed permission odrl:modify with duties [cc:Attribution, dalicc:modificationNotice, dalicc:originalVersionOffer, dalicc:rename]

      was permission odrl:modify with duties [cc:Attribution, dalicc:modificationNotice, dalicc:originalVersionOffer, dalicc:rename]

      Manual edit Its duty cc:Attribution quotes "In the modified file, you must acknowledge the authorship and name of the original file, and the name (if any) of the program which contains it." Its duty dalicc:modificationNotice quotes "You must change any identification string in the file to indicate clearly that the modified file is not part of The Program." Its duty dalicc:originalVersionOffer quotes "(A) distribute a copy of The Program (that is, a complete, unmodified copy of The Program) together with the modified file; if your distribution of the modified file is made by offering access to copy the modified file from a designated place, then offering equivalent access to copy The Program from the same place meets this condition, even though third parties are not compelled to copy The Program along with the modified file;" Its duty dalicc:rename quotes "You must not distribute the modified file with the filename of the original file."

    • changed permission odrl:reproduce

      was permission odrl:reproduce

      Manual edit The statement now quotes the sentence of the licence text it rests on: "You may distribute a complete, unmodified copy of The Program. Distribution of only part of The Program is not allowed."

    • added dct:license <https://creativecommons.org/licenses/by/4.0/>

      Manual edit Every record is published under CC BY 4.0. cc:license names the record DALICC keeps of that licence; dct:license now names it by the address Creative Commons publishes it at, so that a consumer matching the canonical IRI finds it.

  2. Version 1

    Created from the license text on 2026-09-22 (Other OSI approved licenses (corporate, academic, weak copyleft)).

    View JSON-LD Turtle RDF/XML

Every change names the reason behind it: a finding of the content review, one of its library-wide decisions, the metadata that review wrote onto every record, or a hand edit. None of it is legal advice.

Nothing on this page is legal advice. What a license means is decided by its text; ask a legal advisor before you rely on it.