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  32           <h3>License</h3>
  33           <p>
  34             Copyright &copy 2008 - 2008 Bert Burgemeister
  35           <p>
  36           </p>
  37           Permission is granted to copy, distribute and/or modify this
  38           document under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License</a>,
  39           Version 1.2; with no Invariant Sections, no Front-Cover Texts and
  40           no Back-Cover Texts.
  41           <p>
  42             &nbsp;
  43           <p>
  44             &nbsp;
  45           <p>
  46             &nbsp;
  47           <p>
  48             <h3><a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License</a></h3>
  49           <p>
  50             Version 1.2, November 2002
  51           </p>
  52
  53           <pre>Copyright (C) 2000,2001,2002  Free Software Foundation, Inc.</pre>
  54           <pre>51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA</pre>
  55           <pre>Everyone is permitted to copy and distribute verbatim copies</pre>
  56           <pre>of this license document, but changing it is not allowed.</pre>
  57
  58           <p>
  59             <h4>0. PREAMBLE</h4>
  60           </p>
  61
  62           <p>
  63             The purpose of this License is to make a manual, textbook, or other
  64             functional and useful document "free" in the sense of freedom: to
  65             assure everyone the effective freedom to copy and redistribute it,
  66             with or without modifying it, either commercially or noncommercially.
  67             Secondarily, this License preserves for the author and publisher a way
  68             to get credit for their work, while not being considered responsible
  69             for modifications made by others.
  70           </p>
  71
  72           <p>
  73             This License is a kind of "copyleft", which means that derivative
  74             works of the document must themselves be free in the same sense.  It
  75             complements the GNU General Public License, which is a copyleft
  76             license designed for free software.
  77           </p>
  78
  79           <p>
  80             We have designed this License in order to use it for manuals for free
  81             software, because free software needs free documentation: a free
  82             program should come with manuals providing the same freedoms that the
  83             software does.  But this License is not limited to software manuals;
  84             it can be used for any textual work, regardless of subject matter or
  85             whether it is published as a printed book.  We recommend this License
  86             principally for works whose purpose is instruction or reference.
  87           </p>
  88
  89           <p>
  90             <h4>1. APPLICABILITY AND DEFINITIONS</h4>
  91           </p>
  92
  93           <p>
  94             This License applies to any manual or other work, in any medium, that
  95             contains a notice placed by the copyright holder saying it can be
  96             distributed under the terms of this License.  Such a notice grants a
  97             world-wide, royalty-free license, unlimited in duration, to use that
  98             work under the conditions stated herein.  The "Document", below,
  99             refers to any such manual or work.  Any member of the public is a
 100             licensee, and is addressed as "you".  You accept the license if you
 101             copy, modify or distribute the work in a way requiring permission
 102             under copyright law.
 103           </p>
 104
 105           <p>
 106             A "Modified Version" of the Document means any work containing the
 107             Document or a portion of it, either copied verbatim, or with
 108             modifications and/or translated into another language.
 109           </p>
 110
 111           <p>
 112             A "Secondary Section" is a named appendix or a front-matter section of
 113             the Document that deals exclusively with the relationship of the
 114             publishers or authors of the Document to the Document's overall subject
 115             (or to related matters) and contains nothing that could fall directly
 116             within that overall subject.  (Thus, if the Document is in part a
 117             textbook of mathematics, a Secondary Section may not explain any
 118             mathematics.)  The relationship could be a matter of historical
 119             connection with the subject or with related matters, or of legal,
 120             commercial, philosophical, ethical or political position regarding
 121             them.
 122           </p>
 123
 124           <p>
 125             The "Invariant Sections" are certain Secondary Sections whose titles
 126             are designated, as being those of Invariant Sections, in the notice
 127             that says that the Document is released under this License.  If a
 128             section does not fit the above definition of Secondary then it is not
 129             allowed to be designated as Invariant.  The Document may contain zero
 130             Invariant Sections.  If the Document does not identify any Invariant
 131             Sections then there are none.
 132           </p>
 133
 134           <p>
 135             The "Cover Texts" are certain short passages of text that are listed,
 136             as Front-Cover Texts or Back-Cover Texts, in the notice that says that
 137             the Document is released under this License.  A Front-Cover Text may
 138             be at most 5 words, and a Back-Cover Text may be at most 25 words.
 139           </p>
 140
 141           <p>
 142             A "Transparent" copy of the Document means a machine-readable copy,
 143             represented in a format whose specification is available to the
 144             general public, that is suitable for revising the document
 145             straightforwardly with generic text editors or (for images composed of
 146             pixels) generic paint programs or (for drawings) some widely available
 147             drawing editor, and that is suitable for input to text formatters or
 148             for automatic translation to a variety of formats suitable for input
 149             to text formatters.  A copy made in an otherwise Transparent file
 150             format whose markup, or absence of markup, has been arranged to thwart
 151             or discourage subsequent modification by readers is not Transparent.
 152             An image format is not Transparent if used for any substantial amount
 153             of text.  A copy that is not "Transparent" is called "Opaque".
 154           </p>
 155
 156           <p>
 157             Examples of suitable formats for Transparent copies include plain
 158             ASCII without markup, Texinfo input format, LaTeX input format, SGML
 159             or XML using a publicly available DTD, and standard-conforming simple
 160             HTML, PostScript or PDF designed for human modification.  Examples of
 161             transparent image formats include PNG, XCF and JPG.  Opaque formats
 162             include proprietary formats that can be read and edited only by
 163             proprietary word processors, SGML or XML for which the DTD and/or
 164             processing tools are not generally available, and the
 165             machine-generated HTML, PostScript or PDF produced by some word
 166             processors for output purposes only.
 167           </p>
 168
 169           <p>
 170             The "Title Page" means, for a printed book, the title page itself,
 171             plus such following pages as are needed to hold, legibly, the material
 172             this License requires to appear in the title page.  For works in
 173             formats which do not have any title page as such, "Title Page" means
 174             the text near the most prominent appearance of the work's title,
 175             preceding the beginning of the body of the text.
 176           </p>
 177
 178           <p>
 179             A section "Entitled XYZ" means a named subunit of the Document whose
 180             title either is precisely XYZ or contains XYZ in parentheses following
 181             text that translates XYZ in another language.  (Here XYZ stands for a
 182             specific section name mentioned below, such as "Acknowledgements",
 183             "Dedications", "Endorsements", or "History".)  To "Preserve the Title"
 184             of such a section when you modify the Document means that it remains a
 185             section "Entitled XYZ" according to this definition.
 186           </p>
 187
 188           <p>
 189             The Document may include Warranty Disclaimers next to the notice which
 190             states that this License applies to the Document.  These Warranty
 191             Disclaimers are considered to be included by reference in this
 192             License, but only as regards disclaiming warranties: any other
 193             implication that these Warranty Disclaimers may have is void and has
 194             no effect on the meaning of this License.
 195           </p>
 196
 197           <p>
 198             <h4>2. VERBATIM COPYING</h4>
 199           </p>
 200
 201           <p>
 202             You may copy and distribute the Document in any medium, either
 203             commercially or noncommercially, provided that this License, the
 204             copyright notices, and the license notice saying this License applies
 205             to the Document are reproduced in all copies, and that you add no other
 206             conditions whatsoever to those of this License.  You may not use
 207             technical measures to obstruct or control the reading or further
 208             copying of the copies you make or distribute.  However, you may accept
 209             compensation in exchange for copies.  If you distribute a large enough
 210             number of copies you must also follow the conditions in section 3.
 211           </p>
 212
 213           <p>
 214             You may also lend copies, under the same conditions stated above, and
 215             you may publicly display copies.
 216           </p>
 217
 218           <p>
 219             <h4>3. COPYING IN QUANTITY</h4>
 220           </p>
 221
 222           <p>
 223             If you publish printed copies (or copies in media that commonly have
 224             printed covers) of the Document, numbering more than 100, and the
 225             Document's license notice requires Cover Texts, you must enclose the
 226             copies in covers that carry, clearly and legibly, all these Cover
 227             Texts: Front-Cover Texts on the front cover, and Back-Cover Texts on
 228             the back cover.  Both covers must also clearly and legibly identify
 229             you as the publisher of these copies.  The front cover must present
 230             the full title with all words of the title equally prominent and
 231             visible.  You may add other material on the covers in addition.
 232             Copying with changes limited to the covers, as long as they preserve
 233             the title of the Document and satisfy these conditions, can be treated
 234             as verbatim copying in other respects.
 235           </p>
 236
 237           <p>
 238             If the required texts for either cover are too voluminous to fit
 239             legibly, you should put the first ones listed (as many as fit
 240             reasonably) on the actual cover, and continue the rest onto adjacent
 241             pages.
 242           </p>
 243
 244           <p>
 245             If you publish or distribute Opaque copies of the Document numbering
 246             more than 100, you must either include a machine-readable Transparent
 247             copy along with each Opaque copy, or state in or with each Opaque copy
 248             a computer-network location from which the general network-using
 249             public has access to download using public-standard network protocols
 250             a complete Transparent copy of the Document, free of added material.
 251             If you use the latter option, you must take reasonably prudent steps,
 252             when you begin distribution of Opaque copies in quantity, to ensure
 253             that this Transparent copy will remain thus accessible at the stated
 254             location until at least one year after the last time you distribute an
 255             Opaque copy (directly or through your agents or retailers) of that
 256             edition to the public.
 257           </p>
 258
 259           <p>
 260             It is requested, but not required, that you contact the authors of the
 261             Document well before redistributing any large number of copies, to give
 262             them a chance to provide you with an updated version of the Document.
 263           </p>
 264
 265           <p>
 266             <h4>4. MODIFICATIONS</h4>
 267           </p>
 268
 269           <p>
 270             You may copy and distribute a Modified Version of the Document under
 271             the conditions of sections 2 and 3 above, provided that you release
 272             the Modified Version under precisely this License, with the Modified
 273             Version filling the role of the Document, thus licensing distribution
 274             and modification of the Modified Version to whoever possesses a copy
 275             of it.  In addition, you must do these things in the Modified Version:
 276           </p>
 277
 278           <ul>
 279             <li><h4>A.</h4> Use in the Title Page (and on the covers, if any) a title distinct
 280               from that of the Document, and from those of previous versions
 281               (which should, if there were any, be listed in the History section
 282               of the Document).  You may use the same title as a previous version
 283               if the original publisher of that version gives permission.</li>
 284             <li><h4>B.</h4> List on the Title Page, as authors, one or more persons or entities
 285               responsible for authorship of the modifications in the Modified
 286               Version, together with at least five of the principal authors of the
 287               Document (all of its principal authors, if it has fewer than five),
 288               unless they release you from this requirement.</li>
 289             <li><h4>C.</h4> State on the Title page the name of the publisher of the
 290               Modified Version, as the publisher.</li>
 291             <li><h4>D.</h4> Preserve all the copyright notices of the Document.</li>
 292             <li><h4>E.</h4> Add an appropriate copyright notice for your modifications
 293               adjacent to the other copyright notices.</li>
 294             <li><h4>F.</h4> Include, immediately after the copyright notices, a license notice
 295               giving the public permission to use the Modified Version under the
 296               terms of this License, in the form shown in the Addendum below.</li>
 297             <li><h4>G.</h4> Preserve in that license notice the full lists of Invariant Sections
 298               and required Cover Texts given in the Document's license notice.</li>
 299             <li><h4>H.</h4> Include an unaltered copy of this License.</li>
 300             <li><h4>I.</h4> Preserve the section Entitled "History", Preserve its Title, and add
 301               to it an item stating at least the title, year, new authors, and
 302               publisher of the Modified Version as given on the Title Page.  If
 303               there is no section Entitled "History" in the Document, create one
 304               stating the title, year, authors, and publisher of the Document as
 305               given on its Title Page, then add an item describing the Modified
 306               Version as stated in the previous sentence.</li>
 307             <li><h4>J.</h4> Preserve the network location, if any, given in the Document for
 308               public access to a Transparent copy of the Document, and likewise
 309               the network locations given in the Document for previous versions
 310               it was based on.  These may be placed in the "History" section.
 311               You may omit a network location for a work that was published at
 312               least four years before the Document itself, or if the original
 313               publisher of the version it refers to gives permission.</li>
 314             <li><h4>K.</h4> For any section Entitled "Acknowledgements" or "Dedications",
 315               Preserve the Title of the section, and preserve in the section all
 316               the substance and tone of each of the contributor acknowledgements
 317               and/or dedications given therein.</li>
 318             <li><h4>L.</h4> Preserve all the Invariant Sections of the Document,
 319               unaltered in their text and in their titles.  Section numbers
 320               or the equivalent are not considered part of the section titles.</li>
 321             <li><h4>M.</h4> Delete any section Entitled "Endorsements".  Such a section
 322               may not be included in the Modified Version.</li>
 323             <li><h4>N.</h4> Do not retitle any existing section to be Entitled "Endorsements"
 324               or to conflict in title with any Invariant Section.</li>
 325             <li><h4>O.</h4> Preserve any Warranty Disclaimers.</li>
 326           </ul>
 327
 328           <p>
 329             If the Modified Version includes new front-matter sections or
 330             appendices that qualify as Secondary Sections and contain no material
 331             copied from the Document, you may at your option designate some or all
 332             of these sections as invariant.  To do this, add their titles to the
 333             list of Invariant Sections in the Modified Version's license notice.
 334             These titles must be distinct from any other section titles.
 335           </p>
 336
 337           <p>
 338             You may add a section Entitled "Endorsements", provided it contains
 339             nothing but endorsements of your Modified Version by various
 340             parties--for example, statements of peer review or that the text has
 341             been approved by an organization as the authoritative definition of a
 342             standard.
 343           </p>
 344
 345           <p>
 346             You may add a passage of up to five words as a Front-Cover Text, and a
 347             passage of up to 25 words as a Back-Cover Text, to the end of the list
 348             of Cover Texts in the Modified Version.  Only one passage of
 349             Front-Cover Text and one of Back-Cover Text may be added by (or
 350             through arrangements made by) any one entity.  If the Document already
 351             includes a cover text for the same cover, previously added by you or
 352             by arrangement made by the same entity you are acting on behalf of,
 353             you may not add another; but you may replace the old one, on explicit
 354             permission from the previous publisher that added the old one.
 355           </p>
 356
 357           <p>
 358             The author(s) and publisher(s) of the Document do not by this License
 359             give permission to use their names for publicity for or to assert or
 360             imply endorsement of any Modified Version.
 361           </p>
 362
 363           <p>
 364             <h4>5. COMBINING DOCUMENTS</h4>
 365           </p>
 366
 367           <p>
 368             You may combine the Document with other documents released under this
 369             License, under the terms defined in section 4 above for modified
 370             versions, provided that you include in the combination all of the
 371             Invariant Sections of all of the original documents, unmodified, and
 372             list them all as Invariant Sections of your combined work in its
 373             license notice, and that you preserve all their Warranty Disclaimers.
 374           </p>
 375
 376           <p>
 377             The combined work need only contain one copy of this License, and
 378             multiple identical Invariant Sections may be replaced with a single
 379             copy.  If there are multiple Invariant Sections with the same name but
 380             different contents, make the title of each such section unique by
 381             adding at the end of it, in parentheses, the name of the original
 382             author or publisher of that section if known, or else a unique number.
 383             Make the same adjustment to the section titles in the list of
 384             Invariant Sections in the license notice of the combined work.
 385           </p>
 386
 387           <p>
 388             In the combination, you must combine any sections Entitled "History"
 389             in the various original documents, forming one section Entitled
 390             "History"; likewise combine any sections Entitled "Acknowledgements",
 391             and any sections Entitled "Dedications".  You must delete all sections
 392             Entitled "Endorsements."
 393           </p>
 394
 395           <p>
 396             <h4>6. COLLECTIONS OF DOCUMENTS</h4>
 397           </p>
 398
 399           <p>
 400             You may make a collection consisting of the Document and other documents
 401             released under this License, and replace the individual copies of this
 402             License in the various documents with a single copy that is included in
 403             the collection, provided that you follow the rules of this License for
 404             verbatim copying of each of the documents in all other respects.
 405           </p>
 406
 407           <p>
 408             You may extract a single document from such a collection, and distribute
 409             it individually under this License, provided you insert a copy of this
 410             License into the extracted document, and follow this License in all
 411             other respects regarding verbatim copying of that document.
 412           </p>
 413
 414           <p>
 415             <h4>7. AGGREGATION WITH INDEPENDENT WORKS</h4>
 416           </p>
 417
 418           <p>
 419             A compilation of the Document or its derivatives with other separate
 420             and independent documents or works, in or on a volume of a storage or
 421             distribution medium, is called an "aggregate" if the copyright
 422             resulting from the compilation is not used to limit the legal rights
 423             of the compilation's users beyond what the individual works permit.
 424             When the Document is included in an aggregate, this License does not
 425             apply to the other works in the aggregate which are not themselves
 426             derivative works of the Document.
 427           </p>
 428
 429           <p>
 430             If the Cover Text requirement of section 3 is applicable to these
 431             copies of the Document, then if the Document is less than one half of
 432             the entire aggregate, the Document's Cover Texts may be placed on
 433             covers that bracket the Document within the aggregate, or the
 434             electronic equivalent of covers if the Document is in electronic form.
 435             Otherwise they must appear on printed covers that bracket the whole
 436             aggregate.
 437           </p>
 438
 439           <p>
 440             <h4>8. TRANSLATION</h4>
 441           </p>
 442
 443           <p>
 444             Translation is considered a kind of modification, so you may
 445             distribute translations of the Document under the terms of section 4.
 446             Replacing Invariant Sections with translations requires special
 447             permission from their copyright holders, but you may include
 448             translations of some or all Invariant Sections in addition to the
 449             original versions of these Invariant Sections.  You may include a
 450             translation of this License, and all the license notices in the
 451             Document, and any Warranty Disclaimers, provided that you also include
 452             the original English version of this License and the original versions
 453             of those notices and disclaimers.  In case of a disagreement between
 454             the translation and the original version of this License or a notice
 455             or disclaimer, the original version will prevail.
 456           </p>
 457
 458           <p>
 459             If a section in the Document is Entitled "Acknowledgements",
 460             "Dedications", or "History", the requirement (section 4) to Preserve
 461             its Title (section 1) will typically require changing the actual
 462             title.
 463           </p>
 464
 465           <p>
 466             <h4>9. TERMINATION</h4>
 467           </p>
 468
 469           <p>
 470             You may not copy, modify, sublicense, or distribute the Document except
 471             as expressly provided for under this License.  Any other attempt to
 472             copy, modify, sublicense or distribute the Document is void, and will
 473             automatically terminate your rights under this License.  However,
 474             parties who have received copies, or rights, from you under this
 475             License will not have their licenses terminated so long as such
 476             parties remain in full compliance.
 477           </p>
 478
 479           <p>
 480             <h4>10. FUTURE REVISIONS OF THIS LICENSE</h4>
 481           </p>
 482
 483           <p>
 484             The Free Software Foundation may publish new, revised versions
 485             of the GNU Free Documentation License from time to time.  Such new
 486             versions will be similar in spirit to the present version, but may
 487             differ in detail to address new problems or concerns.  See
 488             http://www.gnu.org/copyleft/.
 489           </p>
 490
 491           <p>
 492             Each version of the License is given a distinguishing version number.
 493             If the Document specifies that a particular numbered version of this
 494             License "or any later version" applies to it, you have the option of
 495             following the terms and conditions either of that specified version or
 496             of any later version that has been published (not as a draft) by the
 497             Free Software Foundation.  If the Document does not specify a version
 498             number of this License, you may choose any version ever published (not
 499             as a draft) by the Free Software Foundation.
 500           </p>
 501
 502           <h3>How to use this License for your documents</h3>
 503
 504           <p>
 505             To use this License in a document you have written, include a copy of
 506             the License in the document and put the following copyright and
 507             license notices just after the title page:
 508           </p>
 509
 510           <pre>Copyright (c)  YEAR  YOUR NAME.</pre>
 511           <pre>Permission is granted to copy, distribute and/or modify this document</pre>
 512           <pre>under the terms of the GNU Free Documentation License, Version 1.2</pre>
 513           <pre>or any later version published by the Free Software Foundation;</pre>
 514           <pre>with no Invariant Sections, no Front-Cover Texts, and no Back-Cover</pre>
 515           <pre>Texts.  A copy of the license is included in the section entitled "GNU</pre>
 516           <pre>Free Documentation License".</pre>
 517
 518           <p>
 519             If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts,
 520             replace the "with...Texts." line with this:
 521           </p>
 522
 523           <pre>with the Invariant Sections being LIST THEIR TITLES, with the</pre>
 524           <pre>Front-Cover Texts being LIST, and with the Back-Cover Texts being LIST.</pre>
 525
 526           <p>
 527             If you have Invariant Sections without Cover Texts, or some other
 528             combination of the three, merge those two alternatives to suit the
 529             situation.
 530           </p>
 531
 532           <p>
 533             If your document contains nontrivial examples of program code, we
 534             recommend releasing these examples in parallel under your choice of
 535             free software license, such as the GNU General Public License,
 536             to permit their use in free software.
 537           </p>
 538
 539
 540           <p>
 541             Copyright notice above.<br />
 542             51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 543             <br />
 544             Verbatim copying and distribution of this entire article is
 545             permitted in any medium without royalty provided this notice is
 546             preserved.
 547           </p>
 548
 549         </td>
 550       </tr>
 551       <tr>
 552         <td class="quicklinks" colspan="2">
 553           &nbsp;
 554         </td>
 555       </tr>
 556       <tr>
 557         <td class="footer" colspan="2">
 558           &copy; 2008 - 2018 &nbsp;
 559           <a href="mailto:trebbu@googlemail.com?subject=CLQR ">
 560             Bert Burgemeister
 561           </a>
 562         </td>
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