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  1	Preamble to the Gnu Lesser General Public License 	 
  2
  3 Copyright (c) 2000 Franz Incorporated, Berkeley, CA 94704
  4
  5The concept of the GNU Lesser General Public License version 2.1
  6("LGPL") has been adopted to govern the use and distribution of
  7above-mentioned application. However, the LGPL uses terminology that
  8is more appropriate for a program written in C than one written in
  9Lisp. Nevertheless, the LGPL can still be applied to a Lisp program if
 10certain clarifications are made. This document details those
 11clarifications. Accordingly, the license for the open-source Lisp
 12applications consists of this document plus the LGPL. Wherever there
 13is a conflict between this document and the LGPL, this document takes
 14precedence over the LGPL.
 15
 16A "Library" in Lisp is a collection of Lisp functions, data and
 17foreign modules. The form of the Library can be Lisp source code (for
 18processing by an interpreter) or object code (usually the result of
 19compilation of source code or built with some other
 20mechanisms). Foreign modules are object code in a form that can be
 21linked into a Lisp executable. When we speak of functions we do so in
 22the most general way to include, in addition, methods and unnamed
 23functions. Lisp "data" is also a general term that includes the data
 24structures resulting from defining Lisp classes. A Lisp application
 25may include the same set of Lisp objects as does a Library, but this
 26does not mean that the application is necessarily a "work based on the
 27Library" it contains.
 28
 29The Library consists of everything in the distribution file set before
 30any modifications are made to the files. If any of the functions or
 31classes in the Library are redefined in other files, then those
 32redefinitions ARE considered a work based on the Library. If
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 34those additional methods are NOT considered a work based on the
 35Library. If Library classes are subclassed, these subclasses are NOT
 36considered a work based on the Library. If the Library is modified to
 37explicitly call other functions that are neither part of Lisp itself
 38nor an available add-on module to Lisp, then the functions called by
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 40goal is to ensure that the Library will compile and run without
 41getting undefined function errors.
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 43It is permitted to add proprietary source code to the Library, but it
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 48states that the former results in an executable that is a "work that
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 50results in one that is a "derivative of the Library", which is
 51therefore covered by the LGPL. Since Lisp only offers one choice,
 52which is to link the Library into an executable at build time, we
 53declare that, for the purpose applying the LGPL to the Library, an
 54executable that results from linking a "work that uses the Library"
 55with the Library is considered a "work that uses the Library" and is
 56therefore NOT covered by the LGPL.
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 58Because of this declaration, section 6 of LGPL is not applicable to
 59the Library. However, in connection with each distribution of this
 60executable, you must also deliver, in accordance with the terms and
 61conditions of the LGPL, the source code of Library (or your derivative
 62thereof) that is incorporated into this executable.
 63
 64	   	   GNU LESSER GENERAL PUBLIC LICENSE
 65                       Version 3, 29 June 2007
 66
 67 Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
 68 Everyone is permitted to copy and distribute verbatim copies
 69 of this license document, but changing it is not allowed.
 70
 71
 72  This version of the GNU Lesser General Public License incorporates
 73the terms and conditions of version 3 of the GNU General Public
 74License, supplemented by the additional permissions listed below.
 75
 76  0. Additional Definitions. 
 77
 78  As used herein, "this License" refers to version 3 of the GNU Lesser
 79General Public License, and the "GNU GPL" refers to version 3 of the GNU
 80General Public License.
 81
 82  "The Library" refers to a covered work governed by this License,
 83other than an Application or a Combined Work as defined below.
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 85  An "Application" is any work that makes use of an interface provided
 86by the Library, but which is not otherwise based on the Library.
 87Defining a subclass of a class defined by the Library is deemed a mode
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 90  A "Combined Work" is a work produced by combining or linking an
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 97for portions of the Combined Work that, considered in isolation, are
 98based on the Application, and not on the Linked Version.
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103Application, but excluding the System Libraries of the Combined Work.
104
105  1. Exception to Section 3 of the GNU GPL.
106
107  You may convey a covered work under sections 3 and 4 of this License
108without being bound by section 3 of the GNU GPL.
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110  2. Conveying Modified Versions.
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112  If you modify a copy of the Library, and, in your modifications, a
113facility refers to a function or data to be supplied by an Application
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115facility is invoked), then you may convey a copy of the modified
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118   a) under this License, provided that you make a good faith effort to
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120   function or data, the facility still operates, and performs
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123   b) under the GNU GPL, with none of the additional permissions of
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126  3. Object Code Incorporating Material from Library Header Files.
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128  The object code form of an Application may incorporate material from
129a header file that is part of the Library.  You may convey such object
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131material is not limited to numerical parameters, data structure
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148the following:
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151   the Library is used in it and that the Library and its use are
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153
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155   document.
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157   c) For a Combined Work that displays copyright notices during
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162   d) Do one of the following:
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164       0) Convey the Minimal Corresponding Source under the terms of this
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191  5. Combined Libraries.
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193  You may place library facilities that are a work based on the
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195facilities that are not Applications and are not covered by this
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197choice, if you do both of the following:
198
199   a) Accompany the combined library with a copy of the same work based
200   on the Library, uncombined with any other library facilities,
201   conveyed under the terms of this License.
202
203   b) Give prominent notice with the combined library that part of it
204   is a work based on the Library, and explaining where to find the
205   accompanying uncombined form of the same work.
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207  6. Revised Versions of the GNU Lesser General Public License.
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209  The Free Software Foundation may publish revised and/or new versions
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214  Each version is given a distinguishing version number. If the
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