summaryrefslogtreecommitdiff
path: root/macros/latex/contrib/program
diff options
context:
space:
mode:
authorNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
committerNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
commite0c6872cf40896c7be36b11dcc744620f10adf1d (patch)
tree60335e10d2f4354b0674ec22d7b53f0f8abee672 /macros/latex/contrib/program
Initial commit
Diffstat (limited to 'macros/latex/contrib/program')
-rw-r--r--macros/latex/contrib/program/README27
-rw-r--r--macros/latex/contrib/program/gpl-3.0.txt674
-rw-r--r--macros/latex/contrib/program/plink.tex58
-rw-r--r--macros/latex/contrib/program/program-demo.tex325
-rw-r--r--macros/latex/contrib/program/program-doc.pdfbin0 -> 43768 bytes
-rw-r--r--macros/latex/contrib/program/program-doc.tex76
-rw-r--r--macros/latex/contrib/program/program.sty1010
7 files changed, 2170 insertions, 0 deletions
diff --git a/macros/latex/contrib/program/README b/macros/latex/contrib/program/README
new file mode 100644
index 0000000000..3a231c3a27
--- /dev/null
+++ b/macros/latex/contrib/program/README
@@ -0,0 +1,27 @@
+
+Here's a copy of my LaTeX2e style file for typesetting programs
+and algorithms in my favourite style without having to type
+in endless tabbing commands. Each line is set in math mode
+so all the indentation and spacing is done automatically.
+The notation |variable_name| can be used within normal text,
+maths expressions or programs to indicate a variable name.
+Use \origbar to get a normal | symbol in a program.
+The commands \A, \B, \R, \T and \Z typeset the corresponding bold
+letter with the next object as a substript (eg \S1 typesets {\bf
+S$_1$} etc). They now cope with primes as well, (eg $\S2'''$). The
+program.sty file can be easily edited to reflect your favoured style.
+Typesetting a program is as easy as:
+
+\(\IF x \ne 0 \THEN |long_name|_{123} = x^y \FI\)
+
+See the program-demo.tex file for examples.
+
+The file should work with or without AMSLaTeX.
+
+This work is released under the GPL version 3.
+
+ Martin Ward.
+
+martin@gkc.org.uk http://www.cse.dmu.ac.uk/~mward/ Erdos number: 4
+G.K.Chesterton web site: http://www.cse.dmu.ac.uk/~mward/gkc/
+
diff --git a/macros/latex/contrib/program/gpl-3.0.txt b/macros/latex/contrib/program/gpl-3.0.txt
new file mode 100644
index 0000000000..94a9ed024d
--- /dev/null
+++ b/macros/latex/contrib/program/gpl-3.0.txt
@@ -0,0 +1,674 @@
+ GNU GENERAL PUBLIC LICENSE
+ Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+ The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works. By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users. We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors. You can apply it to
+your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+ To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights. Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+ For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received. You must make sure that they, too, receive
+or can get the source code. And you must show them these terms so they
+know their rights.
+
+ Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+ For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software. For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
+
+ Some devices are designed to deny users access to install or run
+modified versions of the software inside them, although the manufacturer
+can do so. This is fundamentally incompatible with the aim of
+protecting users' freedom to change the software. The systematic
+pattern of such abuse occurs in the area of products for individuals to
+use, which is precisely where it is most unacceptable. Therefore, we
+have designed this version of the GPL to prohibit the practice for those
+products. If such problems arise substantially in other domains, we
+stand ready to extend this provision to those domains in future versions
+of the GPL, as needed to protect the freedom of users.
+
+ Finally, every program is threatened constantly by software patents.
+States should not allow patents to restrict development and use of
+software on general-purpose computers, but in those that do, we wish to
+avoid the special danger that patents applied to a free program could
+make it effectively proprietary. To prevent this, the GPL assures that
+patents cannot be used to render the program non-free.
+
+ The precise terms and conditions for copying, distribution and
+modification follow.
+
+ TERMS AND CONDITIONS
+
+ 0. Definitions.
+
+ "This License" refers to version 3 of the GNU General Public License.
+
+ "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+ "The Program" refers to any copyrightable work licensed under this
+License. Each licensee is addressed as "you". "Licensees" and
+"recipients" may be individuals or organizations.
+
+ To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of an
+exact copy. The resulting work is called a "modified version" of the
+earlier work or a work "based on" the earlier work.
+
+ A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+ To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy. Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
+
+ To "convey" a work means any kind of propagation that enables other
+parties to make or receive copies. Mere interaction with a user through
+a computer network, with no transfer of a copy, is not conveying.
+
+ An interactive user interface displays "Appropriate Legal Notices"
+to the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License. If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
+ 1. Source Code.
+
+ The "source code" for a work means the preferred form of the work
+for making modifications to it. "Object code" means any non-source
+form of a work.
+
+ A "Standard Interface" means an interface that either is an official
+standard defined by a recognized standards body, or, in the case of
+interfaces specified for a particular programming language, one that
+is widely used among developers working in that language.
+
+ The "System Libraries" of an executable work include anything, other
+than the work as a whole, that (a) is included in the normal form of
+packaging a Major Component, but which is not part of that Major
+Component, and (b) serves only to enable use of the work with that
+Major Component, or to implement a Standard Interface for which an
+implementation is available to the public in source code form. A
+"Major Component", in this context, means a major essential component
+(kernel, window system, and so on) of the specific operating system
+(if any) on which the executable work runs, or a compiler used to
+produce the work, or an object code interpreter used to run it.
+
+ The "Corresponding Source" for a work in object code form means all
+the source code needed to generate, install, and (for an executable
+work) run the object code and to modify the work, including scripts to
+control those activities. However, it does not include the work's
+System Libraries, or general-purpose tools or generally available free
+programs which are used unmodified in performing those activities but
+which are not part of the work. For example, Corresponding Source
+includes interface definition files associated with source files for
+the work, and the source code for shared libraries and dynamically
+linked subprograms that the work is specifically designed to require,
+such as by intimate data communication or control flow between those
+subprograms and other parts of the work.
+
+ The Corresponding Source need not include anything that users
+can regenerate automatically from other parts of the Corresponding
+Source.
+
+ The Corresponding Source for a work in source code form is that
+same work.
+
+ 2. Basic Permissions.
+
+ All rights granted under this License are granted for the term of
+copyright on the Program, and are irrevocable provided the stated
+conditions are met. This License explicitly affirms your unlimited
+permission to run the unmodified Program. The output from running a
+covered work is covered by this License only if the output, given its
+content, constitutes a covered work. This License acknowledges your
+rights of fair use or other equivalent, as provided by copyright law.
+
+ You may make, run and propagate covered works that you do not
+convey, without conditions so long as your license otherwise remains
+in force. You may convey covered works to others for the sole purpose
+of having them make modifications exclusively for you, or provide you
+with facilities for running those works, provided that you comply with
+the terms of this License in conveying all material for which you do
+not control copyright. Those thus making or running the covered works
+for you must do so exclusively on your behalf, under your direction
+and control, on terms that prohibit them from making any copies of
+your copyrighted material outside their relationship with you.
+
+ Conveying under any other circumstances is permitted solely under
+the conditions stated below. Sublicensing is not allowed; section 10
+makes it unnecessary.
+
+ 3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+
+ No covered work shall be deemed part of an effective technological
+measure under any applicable law fulfilling obligations under article
+11 of the WIPO copyright treaty adopted on 20 December 1996, or
+similar laws prohibiting or restricting circumvention of such
+measures.
+
+ When you convey a covered work, you waive any legal power to forbid
+circumvention of technological measures to the extent such circumvention
+is effected by exercising rights under this License with respect to
+the covered work, and you disclaim any intention to limit operation or
+modification of the work as a means of enforcing, against the work's
+users, your or third parties' legal rights to forbid circumvention of
+technological measures.
+
+ 4. Conveying Verbatim Copies.
+
+ You may convey verbatim copies of the Program's source code as you
+receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice;
+keep intact all notices stating that this License and any
+non-permissive terms added in accord with section 7 apply to the code;
+keep intact all notices of the absence of any warranty; and give all
+recipients a copy of this License along with the Program.
+
+ You may charge any price or no price for each copy that you convey,
+and you may offer support or warranty protection for a fee.
+
+ 5. Conveying Modified Source Versions.
+
+ You may convey a work based on the Program, or the modifications to
+produce it from the Program, in the form of source code under the
+terms of section 4, provided that you also meet all of these conditions:
+
+ a) The work must carry prominent notices stating that you modified
+ it, and giving a relevant date.
+
+ b) The work must carry prominent notices stating that it is
+ released under this License and any conditions added under section
+ 7. This requirement modifies the requirement in section 4 to
+ "keep intact all notices".
+
+ c) You must license the entire work, as a whole, under this
+ License to anyone who comes into possession of a copy. This
+ License will therefore apply, along with any applicable section 7
+ additional terms, to the whole of the work, and all its parts,
+ regardless of how they are packaged. This License gives no
+ permission to license the work in any other way, but it does not
+ invalidate such permission if you have separately received it.
+
+ d) If the work has interactive user interfaces, each must display
+ Appropriate Legal Notices; however, if the Program has interactive
+ interfaces that do not display Appropriate Legal Notices, your
+ work need not make them do so.
+
+ A compilation of a covered work with other separate and independent
+works, which are not by their nature extensions of the covered work,
+and which are not combined with it such as to form a larger program,
+in or on a volume of a storage or distribution medium, is called an
+"aggregate" if the compilation and its resulting copyright are not
+used to limit the access or legal rights of the compilation's users
+beyond what the individual works permit. Inclusion of a covered work
+in an aggregate does not cause this License to apply to the other
+parts of the aggregate.
+
+ 6. Conveying Non-Source Forms.
+
+ You may convey a covered work in object code form under the terms
+of sections 4 and 5, provided that you also convey the
+machine-readable Corresponding Source under the terms of this License,
+in one of these ways:
+
+ a) Convey the object code in, or embodied in, a physical product
+ (including a physical distribution medium), accompanied by the
+ Corresponding Source fixed on a durable physical medium
+ customarily used for software interchange.
+
+ b) Convey the object code in, or embodied in, a physical product
+ (including a physical distribution medium), accompanied by a
+ written offer, valid for at least three years and valid for as
+ long as you offer spare parts or customer support for that product
+ model, to give anyone who possesses the object code either (1) a
+ copy of the Corresponding Source for all the software in the
+ product that is covered by this License, on a durable physical
+ medium customarily used for software interchange, for a price no
+ more than your reasonable cost of physically performing this
+ conveying of source, or (2) access to copy the
+ Corresponding Source from a network server at no charge.
+
+ c) Convey individual copies of the object code with a copy of the
+ written offer to provide the Corresponding Source. This
+ alternative is allowed only occasionally and noncommercially, and
+ only if you received the object code with such an offer, in accord
+ with subsection 6b.
+
+ d) Convey the object code by offering access from a designated
+ place (gratis or for a charge), and offer equivalent access to the
+ Corresponding Source in the same way through the same place at no
+ further charge. You need not require recipients to copy the
+ Corresponding Source along with the object code. If the place to
+ copy the object code is a network server, the Corresponding Source
+ may be on a different server (operated by you or a third party)
+ that supports equivalent copying facilities, provided you maintain
+ clear directions next to the object code saying where to find the
+ Corresponding Source. Regardless of what server hosts the
+ Corresponding Source, you remain obligated to ensure that it is
+ available for as long as needed to satisfy these requirements.
+
+ e) Convey the object code using peer-to-peer transmission, provided
+ you inform other peers where the object code and Corresponding
+ Source of the work are being offered to the general public at no
+ charge under subsection 6d.
+
+ A separable portion of the object code, whose source code is excluded
+from the Corresponding Source as a System Library, need not be
+included in conveying the object code work.
+
+ A "User Product" is either (1) a "consumer product", which means any
+tangible personal property which is normally used for personal, family,
+or household purposes, or (2) anything designed or sold for incorporation
+into a dwelling. In determining whether a product is a consumer product,
+doubtful cases shall be resolved in favor of coverage. For a particular
+product received by a particular user, "normally used" refers to a
+typical or common use of that class of product, regardless of the status
+of the particular user or of the way in which the particular user
+actually uses, or expects or is expected to use, the product. A product
+is a consumer product regardless of whether the product has substantial
+commercial, industrial or non-consumer uses, unless such uses represent
+the only significant mode of use of the product.
+
+ "Installation Information" for a User Product means any methods,
+procedures, authorization keys, or other information required to install
+and execute modified versions of a covered work in that User Product from
+a modified version of its Corresponding Source. The information must
+suffice to ensure that the continued functioning of the modified object
+code is in no case prevented or interfered with solely because
+modification has been made.
+
+ If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as
+part of a transaction in which the right of possession and use of the
+User Product is transferred to the recipient in perpetuity or for a
+fixed term (regardless of how the transaction is characterized), the
+Corresponding Source conveyed under this section must be accompanied
+by the Installation Information. But this requirement does not apply
+if neither you nor any third party retains the ability to install
+modified object code on the User Product (for example, the work has
+been installed in ROM).
+
+ The requirement to provide Installation Information does not include a
+requirement to continue to provide support service, warranty, or updates
+for a work that has been modified or installed by the recipient, or for
+the User Product in which it has been modified or installed. Access to a
+network may be denied when the modification itself materially and
+adversely affects the operation of the network or violates the rules and
+protocols for communication across the network.
+
+ Corresponding Source conveyed, and Installation Information provided,
+in accord with this section must be in a format that is publicly
+documented (and with an implementation available to the public in
+source code form), and must require no special password or key for
+unpacking, reading or copying.
+
+ 7. Additional Terms.
+
+ "Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law. If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+ When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it. (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.) You may place
+additional permissions on material, added by you to a covered work,
+for which you have or can give appropriate copyright permission.
+
+ Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders of
+that material) supplement the terms of this License with terms:
+
+ a) Disclaiming warranty or limiting liability differently from the
+ terms of sections 15 and 16 of this License; or
+
+ b) Requiring preservation of specified reasonable legal notices or
+ author attributions in that material or in the Appropriate Legal
+ Notices displayed by works containing it; or
+
+ c) Prohibiting misrepresentation of the origin of that material, or
+ requiring that modified versions of such material be marked in
+ reasonable ways as different from the original version; or
+
+ d) Limiting the use for publicity purposes of names of licensors or
+ authors of the material; or
+
+ e) Declining to grant rights under trademark law for use of some
+ trade names, trademarks, or service marks; or
+
+ f) Requiring indemnification of licensors and authors of that
+ material by anyone who conveys the material (or modified versions of
+ it) with contractual assumptions of liability to the recipient, for
+ any liability that these contractual assumptions directly impose on
+ those licensors and authors.
+
+ All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10. If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term. If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
+
+ If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+ Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions;
+the above requirements apply either way.
+
+ 8. Termination.
+
+ You may not propagate or modify a covered work except as expressly
+provided under this License. Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+ However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+
+ Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+ Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License. If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+ 9. Acceptance Not Required for Having Copies.
+
+ You are not required to accept this License in order to receive or
+run a copy of the Program. Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance. However,
+nothing other than this License grants you permission to propagate or
+modify any covered work. These actions infringe copyright if you do
+not accept this License. Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+ 10. Automatic Licensing of Downstream Recipients.
+
+ Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License. You are not responsible
+for enforcing compliance by third parties with this License.
+
+ An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations. If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+ You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License. For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+ 11. Patents.
+
+ A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based. The
+work thus licensed is called the contributor's "contributor version".
+
+ A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version. For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+ Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+ In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement). To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+ If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients. "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+ If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+ A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License. You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+ Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+ 12. No Surrender of Others' Freedom.
+
+ If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all. For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+ 13. Use with the GNU Affero General Public License.
+
+ Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work. The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+ 14. Revised Versions of this License.
+
+ The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+ Each version is given a distinguishing version number. If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation. If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+ If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+ Later license versions may give you additional or different
+permissions. However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+ 15. Disclaimer of Warranty.
+
+ THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE 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.
+
+ 16. Limitation of Liability.
+
+ IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+ 17. Interpretation of Sections 15 and 16.
+
+ If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+ <program> Copyright (C) <year> <name of author>
+ This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/macros/latex/contrib/program/plink.tex b/macros/latex/contrib/program/plink.tex
new file mode 100644
index 0000000000..1144493ff3
--- /dev/null
+++ b/macros/latex/contrib/program/plink.tex
@@ -0,0 +1,58 @@
+\documentclass{article}
+
+\usepackage{program}
+
+\catcode`\!=\active % Make ! active
+\let!=| % Set it to be the same as |
+\let|=\origbar % Restore | to the old value
+\catcode`\!=12 % These two lines make ! active
+\mathcode`\!="8000 % only in maths mode.
+
+\makeatletter
+\def\@svariable{%
+ \catcode`\!\active
+ \lccode`\~`\!%
+ \lowercase{\def~{\endgroup% if we were not in mmode, do italic corr:
+ \ifwasinmmode\let\next=\/% was \relax
+ \else\let\next=\variablefontend\fi
+ \next
+ \egroup}%
+ \let\@dovar~}%
+ \leavevmode\null}
+\makeatother
+
+\begin{document}
+
+This document illustrates how to use the exclamation mark (!), or any other character, instead of vertical bar
+as the variable name delimiter. This may useful of you are typesetting programs which use a lot of vertical bars.
+
+\[ \left|\frac{\partial \varphi (X)}{\partial g}\right|
+ = \max_{i\in R(X)} \nabla f_i(X) g^T
+\]
+
+Testing!
+
+\[ !foo_bar! = x + y \]
+
+\[ !foo!_{!bar!} = x + y \]
+
+Note that the $!bar!$ subscript is not at a smaller size. If you want a small
+subscript, write:
+
+\[ !foo!_{\scriptvar!bar!} = x + y \]
+
+\begin{program}
+!choose ! choose X_0 ;
+X := X_0 ;
+\DO \textnormal{determine } |R(X)|
+ \textnormal{determine } |G(X)|
+ \textnormal{determine } |!foo_bar!(X)|
+ \textnormal{determine } |Z*|
+ \IF |Z*|=0 \THEN \EXIT \FI
+ \textnormal{determine direction of steepest descent } g=-|Z*|/{\parallel |Z*|\parallel}
+ \textnormal{determine }\alpha>0,\textnormal{ for which }\varphi(X+\alpha g)\textnormal{ is minimum}
+ X := X + \alpha g
+\OD
+\end{program}
+
+\end{document}
diff --git a/macros/latex/contrib/program/program-demo.tex b/macros/latex/contrib/program/program-demo.tex
new file mode 100644
index 0000000000..af7c3bcbe8
--- /dev/null
+++ b/macros/latex/contrib/program/program-demo.tex
@@ -0,0 +1,325 @@
+\documentclass{article}
+\usepackage{amsmath}
+\usepackage{amssymb}
+\usepackage{newlfont}
+\usepackage{program}
+\setlength{\parskip}{1ex}
+
+% Number algorithms separately:
+%\newtheorem{algorithm}{Algorithm}
+
+% Number algorithms within sections:
+\newtheorem{algorithm}{Algorithm}[section]
+
+% For "floating" algorithms, use:
+% \begin{figure}
+% \begin{program}
+% ...
+% \end{program}
+% \end{figure}
+
+% To use |foo_bar| in headings, set _ to be active.
+% Not done by default as this clashes with \includegraphics
+% if filenames have _ characters in them:
+
+\catcode`\_\active
+
+\begin{document}
+\title{A demonstration of the {\tt program} environment}
+\author{Martin Ward\\
+\tt{martin@gkc.org.uk}}
+\maketitle
+
+\tableofcontents
+
+\section{Example with |first_set| and $|first_set|$.}
+
+
+The {\tt program} style defines two environments, {\tt program} and {\tt
+programbox} for typesetting programs and algorithms. Within the program
+environment:
+\begin{enumerate}
+ \item Newlines are significant;
+ \item Each line is in math mode, so for example spaces in the input
+file are not significant;
+ \item The command \verb:\\: within a line causes an extra
+linebreak in the output;
+ \item The indentation of each line is calculated automatically;
+ \item To cause extra indentation, use the commands \verb:\tab: to
+set a new tab, and \verb:\untab: to remove it (see the examples below);
+ \item Vertical bars are used to delimit long variable names with
+underscores (and other unusual characters).
+\end{enumerate}
+
+\verb:testing | in verbatim:
+
+\begin{verbatim}
+testing | and @ in verbatim
+\end{verbatim}
+
+
+Here is a small program:
+\( |first_set|:= \set{x | x^2 + y_1 > 0 } \)
+It shows how to typeset mathematics as part of a program. Since each line is
+typeset in maths mode, all spacing is done automatically. The set brackets
+expand automatically, for example in this program (which also demonstrates the
+\verb:\tab: and \verb:\untab: commands):
+\begin{program}
+t := \set{x | \displaystyle\frac{x}{y} = z};
+t := t \setminus u;
+z := a \tab {} + b + c + d
+ {} + e + f + g
+ {} + h + i + j; \untab
+\IF x = 0 \THEN y :=0 \FI
+\end{program}
+
+You can use |variable_names| in text or math mode: $|variable_name|^2 = 2$.
+Names can have |odd_characters:!@#$%^&*:;_like_this!|.
+
+Note that \verb:\(: and \verb:\): are redefined to typeset a program in
+a minipage. (This is useful in running text, or to keep a short program all on
+one page). There is some notation for sequences: \( \seq{x_1,x_2,\dots,x_n} \)
+and for universal and existential quantifiers: $ \Forall x. \Exists y. y>x $
+(yes, I use these in my programs!)
+
+I often use bold letters to represent program fragments, formulas etc. so
+I have set up commands \S{}, \R{} etc. for the most common ones. The
+commands have one argument (a subscript, eg \S1, \S2, \S{23}) or a
+sequence of ``prime'' characters: \S', \S''''' etc. If you want both a
+subscript and one or more primes, then you must use maths mode, eg $\S2'$
+Consider the difference between typing \verb:``\S2'': which gives ``\S2'' and
+\verb:``$\S2''$'': which gives ``$\S2''$''. Outside maths mode, \verb:\S:
+assumes any primes after a subscript are either closing quotes or apostrophes.
+
+Here are two program examples with different indentation styles. Note that
+all indentation is calculated automatically in either style:
+
+\noindent
+% programbox keeps the program on one page - like parbox
+\begin{programbox}
+\IF \T1
+ \THEN \IF \T2
+ \THEN \IF \T3
+ \THEN \S4
+ \ELSE \S3
+ \FI
+ \ELSE \S2
+ \FI
+ \ELSE \S1
+\FI;
+% Blank lines are ignored, so you need a ~ on the line
+% to get a blank line in the output:
+~
+\IF \T1 \THEN \IF \T2 \THEN \IF \T3 \THEN \S4
+ \ELSE \S3 \FI
+ \ELSE \S2 \FI
+ \ELSE \S1 \FI;
+\end{programbox}
+
+Note that \keyword{then} and \keyword{else} should be at the {\em start} of
+a line (as in the examples above), not at the end. This is so that you can
+line them up in short \keyword{if} statements, for example:
+\begin{program}
+\IF x=1 \THEN |a_long_procedure_name|(|arg1|, |arg2|, \dots)
+ \ELSE |another_long_procedure_name|(|arg1|, |arg2|, \dots) \FI
+\end{program}
+If the test is long, then you probably want an extra linebreak:
+\begin{program}
+\IF |a_long_boolean_function_name?|(|arg1|, |arg2|, \dots)
+ \THEN |a_long_procedure_name|(|arg1|, |arg2|, \dots)
+ \ELSE |another_long_procedure_name|(|arg1|, |arg2|, \dots) \FI
+\end{program}
+Compare this with the following (which has linebreaks in the ``wrong'' places):
+\begin{program}
+\IF |a_long_boolean_function_name?|(|arg1|, |arg2|, \dots) \THEN
+ |a_long_procedure_name|(|arg1|, |arg2|, \dots)
+ \ELSE
+ |another_long_procedure_name|(|arg1|, |arg2|, \dots) \FI
+\end{program}
+
+
+
+Just to show that {\tt\origbar} still works normally to indicate the
+placing of vertical lines) in the preamble of a tabular
+(or array) environment:
+
+\begin{tabular}{|r|l|} \hline
+\bf Statement & \bf Conditions \\
+\hline
+\S1 & \B1 \\
+\S2 & \B2 \\
+\hline
+\end{tabular}
+
+\section{Procedures and Functions}
+
+Turning on line numbering here. Also using the algoritm enviroment to number
+the algorithms within the sections.
+\NumberProgramstrue
+\begin{algorithm}
+\begin{program}
+\label{one}%
+\mbox{A fast exponentiation function:} \\ % You can use \mbox for comments
+\BEGIN %
+ \FOR i:=1 \TO 10 \STEP 1 \DO
+ |print|(|expt|(2,i)); \\ |newline|() \OD
+\WHERE
+\FUNCT |expt|(x,n) \BODY
+ \EXP z:=1;
+ \WHILE n \neq 0 \DO
+ \WHILE |even|(n) \DO
+ n:=n/2; x:=x*x \OD; \label{foo}
+ n:=n-1; z:=z*x \OD;
+ z \ENDEXP \ENDFUNCT
+\END\label{last}
+\end{program}
+\end{algorithm}
+First line is line~\ref{one}, last is line~\ref{last}.
+Line~\ref{foo} is what makes this function fast!
+
+\begin{algorithm}
+\begin{program}
+\mbox{A fast exponentiation procedure:}
+\BEGIN %
+ \FOR i:=1 \TO 10 \STEP 1 \DO
+ |expt|(2,i); \\ |newline|() \OD %
+\rcomment{This text will be set flush to the right margin}
+\WHERE
+\PROC |expt|(x,n) \BODY
+ z:=1;
+ \DO \IF n=0 \THEN \EXIT \FI;
+ \DO \IF |odd|(n) \THEN \EXIT \FI;
+\COMMENT{This is a comment statement};
+ n:=n/2; x:=x*x \OD;
+ \{ n>0 \};
+ n:=n-1; z:=z*x \OD;
+ |print|(z) \ENDPROC
+\END
+\end{program}
+\end{algorithm}
+
+\noindent An action system equivalent to a \keyword{while} loop:
+\[
+\( \ACTIONS A:
+ A \EQ \IF \B{} \THEN \S{}; \CALL A
+ \ELSE \CALL Z \FI \QE
+ \ENDACTIONS \)
+\EQT
+\( \WHILE \B{} \DO \S{} \OD \)
+\]
+Note the use of \verb:\(: and \verb:\): to enclose the two program boxes.
+Turning off line numbers here.
+\NumberProgramsfalse
+
+\noindent Dijkstra conditionals and loops:
+\begin{program}
+\IF x = 1 \AR y:=y+1
+\BAR x = 2 \AR y:=y^2
+\utdots
+\BAR x = n \AR y:=\displaystyle\sum_{i=1}^n y_i \FI
+
+\DO 2 \origbar x \AND x>0 \AR x:= x/2
+\BAR \NOT 2 \origbar x \AR x:= \modbar{x+3} \OD
+\end{program}
+
+\noindent Loops with multiple \keyword{exit}s:
+\begin{program}
+\DO \DO \IF \B1 \THEN \EXIT \FI;
+ \S1;
+ \IF \B2 \THEN \EXIT(2) \FI \OD;
+ \IF \B1 \THEN \EXIT \FI \OD
+\end{program}
+
+\noindent I hope you get the idea!
+
+\section{A Reverse Engineering Example}
+
+Here's the original program:
+\begin{algorithm}
+\begin{program}
+ \VAR \seq{m := 0, p := 0, |last| := `` ''};
+ \ACTIONS |prog|:
+|prog| \ACTIONEQ %
+ \seq{|line| := `` '', m := 0, i := 1};
+ \CALL |inhere| \ENDACTION
+l \ACTIONEQ %
+ i := i+1;
+ \IF (i=(n+1)) \THEN \CALL |alldone| \FI ;
+ m := 1;
+ \IF |item|[i] \neq |last|
+ \THEN |write|(|line|); |line| := `` ''; m := 0;
+ \CALL |inhere| \FI ;
+ \CALL |more| \ENDACTION
+|inhere| \ACTIONEQ %
+ p := |number|[i]; |line| := |item|[i];
+ |line| := |line| \concat `` '' \concat p;
+ \CALL |more| \ENDACTION
+|more| \ACTIONEQ %
+ \IF (m=1) \THEN p := |number|[i];
+ |line| := |line| \concat ``, '' \concat p \FI ;
+ |last| := |item|[i];
+ \CALL l \ENDACTION
+|alldone| \ACTIONEQ |write|(|line|); \CALL Z \ENDACTION \ENDACTIONS \END
+\end{program}
+\end{algorithm}
+
+And here's the transformed and corrected version:
+\begin{algorithm}
+\begin{program}
+\seq{|line| := `` '', i := 1};
+\WHILE i \neq n+1 \DO
+ |line| := |item|[i] \concat `` '' \concat |number|[i];
+ i := i+1;
+ \WHILE i \neq n+1 \AND |item|[i] = |item|[i-1] \DO
+ |line| := |line| \concat ``, '' \concat |number|[i]);
+ i := i+1 \OD ;
+ |write|(|line|) \OD
+\end{program}
+\end{algorithm}
+
+Below are the same programs in a bold serif style with underlined keywords, using the command
+\verb:\bfvariables::
+\bfvariables
+\begin{program}
+ \VAR \seq{m := 0, p := 0, |last| := `` ''};
+ \ACTIONS |prog|:
+|prog| \ACTIONEQ %
+ \seq{|line| := `` '', m := 0, i := 1};
+ \CALL |inhere| \ENDACTION
+l \ACTIONEQ %
+ i := i+1;
+ \IF (i=(n+1)) \THEN \CALL |alldone| \FI ;
+ m := 1;
+ \IF |item|[i] \neq |last|
+ \THEN |write|(|line|); |line| := `` ''; m := 0;
+ \CALL |inhere| \FI ;
+ \CALL |more| \ENDACTION
+|inhere| \ACTIONEQ %
+ p := |number|[i]; |line| := |item|[i];
+ |line| := |line| \concat `` '' \concat p;
+ \CALL |more| \ENDACTION
+|more| \ACTIONEQ %
+ \IF (m=1) \THEN p := |number|[i];
+ |line| := |line| \concat ``, '' \concat p \FI ;
+ |last| := |item|[i];
+ \CALL l \ENDACTION
+|alldone| \ACTIONEQ |write|(|line|); \CALL Z \ENDACTION \ENDACTIONS \END
+\end{program}
+
+\begin{program}
+\seq{|line|:=`` '', i:=1};
+\WHILE i \neq n+1 \DO
+ |line| := |item|[i] \concat `` '' \concat |number|[i];
+ i := i+1;
+ \WHILE i \neq n+1 \AND |item|[i] = |item|[i-1] \DO
+ |line| := |line| \concat ``, '' \concat |number|[i]);
+ i := i+1 \OD ;
+ |write|(|line|) \OD
+\end{program}
+
+In my opinion, the \verb:\sfvariables: style looks much better.
+The \verb:\bfvariables: style was the default, but this was changed with version 3.3.11.
+
+
+\end{document}
+
diff --git a/macros/latex/contrib/program/program-doc.pdf b/macros/latex/contrib/program/program-doc.pdf
new file mode 100644
index 0000000000..939c8285db
--- /dev/null
+++ b/macros/latex/contrib/program/program-doc.pdf
Binary files differ
diff --git a/macros/latex/contrib/program/program-doc.tex b/macros/latex/contrib/program/program-doc.tex
new file mode 100644
index 0000000000..a761b39825
--- /dev/null
+++ b/macros/latex/contrib/program/program-doc.tex
@@ -0,0 +1,76 @@
+\documentclass[pagesize=auto]{scrartcl}
+
+\usepackage{fixltx2e}
+\usepackage{etex}
+\usepackage{lmodern}
+\usepackage[T1]{fontenc}
+\usepackage{textcomp}
+\usepackage{upquote}
+\usepackage{hologo}
+\usepackage{microtype}
+\usepackage{hyperref}
+
+\newcommand*{\mail}[1]{\href{mailto:#1}{\texttt{#1}}}
+\newcommand*{\pkg}[1]{\textsf{#1}}
+\newcommand*{\cs}[1]{\texttt{\textbackslash#1}}
+\makeatletter
+\newcommand*{\cmd}[1]{\cs{\expandafter\@gobble\string#1}}
+\makeatother
+\newcommand*{\env}[1]{\texttt{#1}}
+
+\addtokomafont{title}{\rmfamily}
+\deffootnote{1em}{1em}{\textsuperscript{\thefootnotemark}}
+\renewcommand*{\labelenumi}{(\theenumi)}
+
+\title{The \pkg{program} package\thanks{This manual corresponds to \pkg{program.sty}~v3.3.14, dated~May 5, 2017.}}
+\author{Martin Ward\thanks{\mail{martin@gkc.org.uk}, \mail{Martin.Ward@smltd.com}\newline\url{http://www.gkc.org.uk/}}}
+\date{May 5, 2017}
+
+
+\begin{document}
+
+\maketitle
+
+\noindent
+This is the ``\pkg{program}'' style option which sets up the
+\env{program} and \env{programbox} environments,
+keywords for programs and a few goodies.
+\emph{Note:} Within the program environment:
+%
+\begin{enumerate}
+\item Newlines are significant.
+\item Each line is in math mode, so for example spaces in the input
+ file are not significant.
+\item \cmd{\\} within a line causes a linebreak in the output.
+\end{enumerate}
+
+We also define a ``\env{programbox}'' environment which typesets a program in a box.
+Useful for keeping a pice of code on one page or for typesetting small
+programs in running text.
+We also redefine \cmd{\(} and \cmd{\)} as \verb+\begin{programbox}+ and \verb+\end{programbox}+.
+The \cmd{\tab} and \cmd{\untab} commands are defined to have no effect while outside
+a \env{program} environment, hence a single-line program can be typeset in
+maths mode without the overhead associated with \env{programbox}.
+
+The notation \verb+|variable_name|+ can be used within normal text,
+maths expressions or programs to indicate a variable name.
+Use \cmd{\origbar} to get a normal \verb+|+ symbol in a program.
+The commands \cmd{\A}, \cmd{\B}, \cmd{\R}, \cmd{\T} and \cmd{\Z} typeset the corresponding bold
+letter with the next object as a substript (eg \verb+\S1+ typesets {\bf
+S$_1$} etc). They now cope with primes as well, (eg \verb+$\S2'''$+)\@. The
+\env{program.sty} file can be easily edited to reflect your favoured style.
+Typesetting a program is as easy as:
+%
+\begin{verbatim}
+\(\IF x \ne 0 \THEN |long_name|_{123} = x^y \FI\)
+\end{verbatim}
+%
+See the \texttt{program-demo.tex} file for examples.
+
+\bigskip\noindent
+The file should work with or without \hologo{AmSLaTeX}.
+
+\bigskip\noindent
+This work is released under the GPL version 3.
+
+\end{document}
diff --git a/macros/latex/contrib/program/program.sty b/macros/latex/contrib/program/program.sty
new file mode 100644
index 0000000000..829141ceaa
--- /dev/null
+++ b/macros/latex/contrib/program/program.sty
@@ -0,0 +1,1010 @@
+% program.sty, Version 3.3.14
+% Version History:
+% 3.3.1: Fix name clash with new AmsTeX (\@prime)
+% 3.3.2: Minor spacing tweaks. Added \sfvariables for a different style.
+% 3.3.3: Added \| to the definition of \dospecials, so that | will
+% still work in a verbatim environment.
+% 3.3.4: Added \ifVBarOutsideProgram switch -- The command \normalbaroutside
+% makes | to act normally outside the program environment
+% 3.3.5: Bugfix (\lt was defined as > in maths mode!)
+% 3.3.6: Minor bugfix: added \do\@ to \dospecials (for AmsTeX)
+% 3.3.7: Restore catcode of _ (due to clash with \includegraphics)
+% 3.3.8: Save/restore \@currentlabel when \ifNumberPrograms is true
+% 3.3.9: Added \bigcaps command (submitted by Matteo Corti <corti@inf.ethz.ch>)
+% 3.3.10: Changed \www command to use normal text rather than typewriter
+% Changed \FOREACH \ATEACH to use \@typename
+% Added \boldsubm (uses \boldsymbol instead of text \bf)
+% 3.3.11: Changed the default style to \sfvariables, old style is \bfvariables
+% 3.3.12: Fixed the interaction with \index and \makeindex (which uses |)
+% 3.3.13: Updated web site
+% 3.3.14: Changed \chardef to \mathchardef to allow more dimen registers
+%
+%
+% A LaTeX2e style file for typesetting algorithms.
+% Copyright 1991, 2007 Martin Ward
+% martin@gkc.org.uk, Martin.Ward@smltd.com
+% http://www.gkc.org.uk/
+%
+% This program is free software; you can redistribute it and/or modify
+% it under the terms of the GNU General Public License as published by
+% the Free Software Foundation; either version 3 of the License, or
+% (at your option) any later version.
+%
+% This program is distributed in the hope that it will be useful,
+% but WITHOUT ANY WARRANTY; without even the implied warranty of
+% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+% GNU General Public License for more details.
+%
+% You should have received a copy of the GNU General Public License
+% along with this program; if not, see <http://www.gnu.org/licenses/>.
+%
+%
+% This is the "program" style option which sets up the
+% program and programbox environments,
+% keywords for programs and a few goodies.
+% NOTE: Within the program environment:
+% (1) Newlines are significant.
+% (2) Each line is in math mode, so for example spaces in the input
+% file are not significant.
+% (3) \\ within a line causes a linebreak in the output.
+%
+% We also define a "programbox" environment which typesets a program in a box.
+% Useful for keeping a pice of code on one page or for typesetting small
+% programs in running text.
+% We also redefine \( and \) as \begin{programbox} and \end{programbox}.
+% The \tab and \untab commands are defined to have no effect while outside
+% a program environment, hence a single-line program can be typeset in
+% maths mode without the overhead associated with programbox.
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%% Section (1). The Keywords.
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+% Set up ";" to add a thick maths space after it when active in math mode:
+\let\@semicolon=;
+\catcode`\;=12\relax
+\mathcode`\;="8000 % Makes ; active in math mode
+{\catcode`\;=\active \gdef;{\ifmmode\semicolon\;\else\@semicolon\fi}}
+\mathchardef\semicolon="603B
+
+% Set up ` so that ``...'' typesets the string in tt (in math mode):
+\mathcode`\`="8000 % Makes ` active in math mode only.
+{%\catcode`\'=\active
+ \catcode`\`=\active
+ \gdef`{\startstring@}
+}
+\newif\ifMathsModeStrings \MathsModeStringsfalse
+\def\startstring@`#1''{\ifMathsModeStrings
+ \mbox{``}#1\mbox{''}\else
+ \mbox{``{\tt #1}''}\fi}
+
+% Set up a larger array of tabs since programs set lots of tabs.
+% This section can be extended if more tabs are needed:
+\newdimen\@gtempa
+\mathchardef\@firsttab=\the\allocationnumber
+\newdimen\@gtempa\newdimen\@gtempa\newdimen\@gtempa\newdimen\@gtempa
+\newdimen\@gtempa\newdimen\@gtempa\newdimen\@gtempa\newdimen\@gtempa
+\newdimen\@gtempa\newdimen\@gtempa\newdimen\@gtempa\newdimen\@gtempa
+\newdimen\@gtempa\newdimen\@gtempa\newdimen\@gtempa\newdimen\@gtempa
+\newdimen\@gtempa\newdimen\@gtempa\newdimen\@gtempa\newdimen\@gtempa
+\newdimen\@gtempa\newdimen\@gtempa\newdimen\@gtempa\newdimen\@gtempa
+\newdimen\@gtempa\newdimen\@gtempa\newdimen\@gtempa\newdimen\@gtempa
+\newdimen\@gtempa\newdimen\@gtempa\newdimen\@gtempa\newdimen\@gtempa
+\newdimen\@gtempa\newdimen\@gtempa\newdimen\@gtempa\newdimen\@gtempa
+\newdimen\@gtempa\newdimen\@gtempa\newdimen\@gtempa\newdimen\@gtempa
+\newdimen\@gtempa\newdimen\@gtempa\newdimen\@gtempa\newdimen\@gtempa
+\newdimen\@gtempa\newdimen\@gtempa\newdimen\@gtempa\newdimen\@gtempa
+\newdimen\@gtempa
+\mathchardef\@maxtab=\the\allocationnumber
+
+% NB: can't use \pushtabns and \poptabs to reduce the need for tabs
+% since \@curtab, \@curtabmar and \@nxttabmar are global variables
+% which would also need to be saved and restored.
+
+% The program environment.
+% This is based on the tabbing environment with each line put in math mode,
+% \obeylines in force and ";" as an active character.
+\def\@programcr{$\@stopline\@startline\ignorespaces$}
+\def\programnewpage{$\@stopline\newpage\@startline\ignorespaces$}
+
+% Line numbers on programs:
+\newcounter{programline}
+\newif\ifNumberPrograms
+% Default is no line numbers:
+\NumberProgramsfalse
+
+% Program text size hook:
+\let\programsize=\relax
+
+% Set switch to false if you want | to act normally
+% outside the program environment:
+\newif\ifVBarOutsideProgram \VBarOutsideProgramtrue
+\def\normalbaroutside{\catcode`\|=12 \VBarOutsideProgramfalse}
+
+\def\program{%
+ \ifNumberPrograms\setcounter{programline}{0}\let\@savecurrentlabel\@currentlabel\fi
+ \ifVBarOutsideProgram\else\catcode`\|=\active\fi %% added line
+ \if@minipage\else\leavevmode\fi
+ \normalshape
+ \obeycr %% added line
+ % activate tabbing commands:
+ \@tabcommandson %% added line
+ \global\let\DO=\@oldDO %% added line
+ \lineskip \z@\let\>\@rtab\let\<\@ltab\let\=\@settab
+ \let\+\@tabplus\let\-\@tabminus\let\`\@tabrj\let\'\@tablab
+ \let\\=\@programcr %% changed from \let\\=\tabcr
+ \global\@hightab\@firsttab
+ \global\@nxttabmar\@firsttab
+ \dimen\@firsttab\@totalleftmargin
+ \global\@tabpush0 \global\@rjfieldfalse
+ \trivlist \item[]%\if@minipage\else\vskip\parskip\fi
+ \programsize
+ \setbox\@tabfbox\hbox{\rlap{\indent\hskip\@totalleftmargin
+ \the\everypar}}\def\@itemfudge{\box\@tabfbox}\@startline\ignorespaces
+ $\@gobblecr %% added line
+}
+
+\def\endprogram{$\@stopline\ifnum\@tabpush > 0 \@badpoptabs \fi\endtrivlist%
+ \restorecr \@tabcommandsoff %% added line
+ \ifVBarOutsideProgram\else\catcode`\|=12\fi %% added line
+ \ifNumberPrograms\global\let\@currentlabel\@savecurrentlabel\fi
+\@gobblecr
+}
+
+\def\smallprogram{%
+ \let\programsize=\small\program
+}
+
+\def\endsmallprogram{%
+ \let\programsize=\relax\endprogram
+}
+
+% - version which puts the whole program in a box.
+\newif\if@programbox \@programboxfalse
+\newenvironment{programbox}%
+ {\begin{minipage}[t]{\textwidth}%
+ \@programboxtrue
+ \begin{program}}%
+ {\end{program}%
+ \@programboxfalse
+ \end{minipage}%
+}
+
+\def\({\begin{programbox}}
+\def\){\end{programbox}}
+
+% A new version of @stopline which ignores blank lines (lines with
+% width 0pt). To print a blank line, put "\ " on it!
+%
+\def\@stopline{%
+ \unskip\@stopfield
+ \if@rjfield
+ \global\@rjfieldfalse
+ \@tempdima\@totalleftmargin \advance\@tempdima\linewidth
+ \hbox to\@tempdima{\@itemfudge\@printlineno\hskip\dimen\@curtabmar
+ \box\@curline\hfil\box\@curfield}%
+ \else
+ \@addfield
+ \ifdim\wd\@curline=0pt\else
+ \hbox{\@itemfudge\@printlineno\hskip\dimen\@curtabmar\box\@curline}%
+ \fi
+\fi
+}
+
+\def\@printlineno{\ifNumberPrograms
+ \global\def\@currentlabel{\theprogramline}%
+ \hskip\leftmargini
+ \llap{{\prognumstyle(\theprogramline)}\hskip\labelsep}\fi}
+
+\def\prognumstyle{\scriptsize\em}
+
+\def\@startline{\global\@curtabmar\@nxttabmar
+ \ifNumberPrograms\grefstepcounter{programline}\fi % Added by M.Ward
+ \global\@curtab\@curtabmar\global\setbox\@curline\hbox % missing \global
+ {}\@startfield\strut} % added 17 Jun 86
+
+\def\grefstepcounter#1{\stepcounter{#1}\let\@tempa\protect
+ \def\protect{\noexpand\protect\noexpand}%
+ \global\edef\@currentlabel{\csname p@#1\endcsname\csname the#1\endcsname}%
+ \let\protect\@tempa}
+
+
+
+% A switch to allow \BAR...\BAR without untabbing twice:
+\newif\ifBarDone \BarDonefalse
+
+% a switch to allow \IF or \ELSIF with no \THEN (Grrr...):
+\newif\ifTHEN
+
+% For saving and restoring tab numbers (if a structure may contain
+% "unbalanced" \tab ... \untab pairs:
+\newcount\old@nxttabmar
+
+% These are the commands used to set the tabs.
+% They have different definitione inside and outside tebbing environments:
+
+\def\@tabcommandson{% activate tabbing commands:
+ % \tab sets a tab stop and adds one to the margin tab:
+ \def\tab{$\=\+$}%
+ % \qtab sets a tab stop at one quad of indentation:
+ \def\qtab{\quad$\=\+$\kern-1em}%
+ % \untab removes one tab stop and moves left if at the beginning of a line:
+ \def\untab{$\@finishfield\@ifatmargin\@ltab\else\relax\fi\-$}%
+ % Must finish current field before testing if at margin:
+ \def\@finishfield{\@stopfield\@addfield\@startfield}%
+ % \@marginspace adds an extra space unless there is no text on the line:
+ \def\@marginspace{$\@finishfield$\@ifatmargin\relax\else\ \fi}%
+ % \rcomment{...} provides a comment flush to the right margin:
+ \def\rcomment##1{$\`##1$}%
+ % \llapm{...} is like \llap{...} but also leaves and re-enters math
+ % mode so that "\llapm{stuff}(" does not put any space between the stuff
+ % and the "(". This means it will line up with "\llapm{stuff}X"
+ % Note this is only used when \@tabcommandson is in force so we are in
+ % normal math mode, not display math mode.
+ % The 1sp space is so that a line with just an \llapm item on it is not
+ % considered to be empty!
+ \def\llapm##1{\@ifatmargin
+ \llap{$##1$}$\hskip 1sp$%
+ \else ##1 \fi}%
+ \def\savetab{\global\old@nxttabmar\@nxttabmar}
+ \def\restoretab{\global\@nxttabmar\old@nxttabmar}
+ % Use this to typeset "..." at a higher tab position:
+ \def\utdots{$\@finishfield\@ifatmargin\@ltab\@ltab\else\relax\fi$\dots}
+ % For typesetting a relation:
+ \def\llapr##1{\@ifatmargin
+ \llap{$\ ##1\ $}${}$%
+ \else\ ##1\ \fi}%
+}
+
+\def\@tabcommandsoff{% deactivate tabbing commands:
+ \let\tab=\relax%
+ \let\qtab=\relax%
+ \let\@finishfield=\relax%
+ \let\untab=\relax%
+ \let\@marginspace=\ % never at margin thus always a space
+ \def\rcomment##1{\qquad\mbox{##1}}%
+ \let\savetab=\relax%
+ \let\restoretab=\relax%
+ \let\utdots=\dots%
+ \def\llapm##1{##1}%
+ \def\llapr##1{##1}%
+}
+
+
+%% Now for the keywords:
+
+\def\IF{\keyword{if}\global\THENfalse\ \tab}
+\def\THEN{\@marginspace\keyword{then}\global\THENtrue\ \tab}
+% else has the same width as then and lines up with it on right:
+\def\ELSE{\@marginspace\llapm{\keyword{else}\ }}%
+% elsf lines up with the if:
+\def\ELSF{\@marginspace\untab\ifTHEN\untab\fi%
+ \global\THENfalse\keyword{elsf}\ \tab}
+\def\ELSIF{\@marginspace\untab\ifTHEN\untab\fi%
+ \global\THENfalse\keyword{elsif}\ \tab}
+% \AR is the arrow for Dijkstra if and do:
+% \AR* starts a newline with one quad indentation:
+\def\AR{\@marginspace\rightarrow\global\THENtrue\@ifstar%
+ {\\\quad\tab\global\BarDonefalse\@gobblecr}%
+ {\ \tab\global\BarDonefalse}}%
+% bar lines up on right with if or do keyword:
+\def\BAR{\@marginspace\ifBarDone\else\untab\fi\global\BarDonetrue
+ \llapm{\barsymbol\ }}%
+\def\FI{\@marginspace\untab\ifTHEN\untab\fi\keyword{fi}}
+\def\AWAIT{\keyword{await}\ }% \THEN provides the \tab
+\def\DO{\keyword{do}\ \tab}
+\let\@oldDO=\DO
+\def\OD{\@marginspace\untab\keyword{od}}
+% \WHILE, \FOR, \FOREACH and \ATEACH temporarily change \DO to not set a tab:
+\def\WHILE{\keyword{while}\ \tab
+ \gdef\DO{\@marginspace\keyword{do}\ \global\let\DO=\@oldDO}}
+\def\FOR{\keyword{for}\ \tab
+ \gdef\DO{\@marginspace\keyword{do}\ \global\let\DO=\@oldDO}}
+\def\FOREACH{\qtab\keyword{foreach}%
+ \gdef\DO{\keyword{do}\ \global\let\DO=\@oldDO}%
+ \ \@typename}
+\def\ATEACH{\qtab\keyword{ateach}%
+ \gdef\DO{\keyword{do}\ \global\let\DO=\@oldDO}%
+ \ \@typename}
+\def\STEP{\@marginspace\keyword{step}\ }
+\def\TO{\@marginspace\keyword{to}\ }
+% \BEGIN, \REP, \ACTIONEQ and \WHERE
+% make sure next statement starts on a new line
+% with one quad of indentation:
+\def\BEGIN{\qtab\hbox{\keyword{begin}}\ }%
+\def\REP{\qtab\hbox{\keyword{rep}}\ }%
+\def\ACTIONEQ{\ \equiv\\\quad\tab}%
+\def\WHERE{\@marginspace\untab\qtab\hbox{\keyword{where}}\ }%
+\def\IFMATCH{\qtab\keyword{ifmatch}\ \@typename}
+\def\FILL{\keyword{fill}\ \tab\savetab\@typename}
+\def\ENDFILL{\@marginspace\restoretab\untab\keyword{endfill}}
+\def\EDIT{\keyword{edit}\ \tab}
+\def\EDITPARENT{\qtab\keyword{editparent}\ }
+\def\ENDEDIT{\@marginspace\untab\keyword{endedit}}
+\def\ENDMATCH{\@marginspace\untab\untab\keyword{endmatch}}
+\def\EXIT{\keyword{exit}}
+% Generalised expression brackets:
+\def\EXP{\openexp\tab}
+\def\ENDEXP{\untab\closexp}
+\def\VAR{\qtab\keyword{var}\ }
+\def\var{\ \keyword{var}\ }
+\def\END{\@marginspace\untab\keyword{end}}
+\def\ENDVAR{\@marginspace\untab\keyword{end}}
+\def\ENDREP{\@marginspace\untab\keyword{endrep}}
+\def\WHERE{\@marginspace\untab\tab\keyword{where}\ }
+\def\WITHIN{\@marginspace\untab\keyword{within}\ }
+\def\PROC{\qtab\keyword{proc}\
+ \gdef\EQ{\EQsymbol\global\let\EQ=\@oldEQ}}
+\def\ENDPROC{\fullstop}
+\def\FUNCT{\qtab\keyword{funct}\
+ \gdef\EQ{\EQsymbol\global\let\EQ=\@oldEQ}}
+\def\ENDFUNCT{\fullstop\global\let\EQ=\@oldEQ}
+\def\JOIN{\keyword{join}\ \tab}
+\def\NIOJ{\@marginspace\untab\keyword{nioj}}
+\let\ENDJOIN=\NIOJ
+\def\ONEOF{\keyword{oneof}\ \tab}
+\def\FOENO{\@marginspace\untab\keyword{foeno}}
+
+\def\ACTIONS{\tab\keyword{actions}\ \global\let\EQ=\@oldEQ}
+\def\ENDACTIONS{\@marginspace\untab\keyword{endactions}}
+\def\ENDACTION{\fullstop}
+\def\CALL{\keyword{call}\ }
+\def\LLAC{}
+\let\ENDCALL=\LLAC
+\def\COMMENT#1{\keyword{comment}\mbox{: #1}}
+\def\C#1{\keyword{C}:\ \mbox{#1}}
+\def\ARRAY{\keyword{array}\ }
+\def\LIKE{\@marginspace\keyword{array}\ }
+\def\TYPEDEF{\@marginspace\keyword{typedef}\ }
+
+\def\@typename#1{\mbox{#1}\ }
+
+% The symbols used in programs:
+\def\BODY{\EQsymbol}
+\def\QE{\fullstop} % end of == definition.
+
+% Expression brackets:
+\def\openexp{\mathopen {\mbox{\rule[-0.5ex]{0.04em}{2.3ex}%
+ \rule[1.7ex]{0.4em}{0.1ex}}}}
+\def\closexp{\mathclose{\mbox{\rule[-0.5ex]{0.4em}{0.1ex}%
+ \rule[-0.5ex]{0.04em}{2.3ex}}}}
+
+% \fullstop ends an action, proc or funct definition:
+\def\fullstop{\untab{\mbox{\bf .}}}
+\def\barsymbol{{\rlap{$\sqcap$}\sqcup}}
+
+% \join and \choice symbols:
+\def\join{\@marginspace\llapm{\sqcup\ }}%
+\def\choice{\@marginspace\llapm{\sqcap\ }}%
+% \EQ puts more space around symbol in program environment:
+% (this gets redefined by \PROC and \FUNCT):
+\def\EQ{\EQsymbol\tab}%
+\def\@oldEQ{\EQsymbol\tab}%
+\def\EQsymbol{\mathrel{\EQspace\equiv\EQspace}}
+
+% default is tab commands deactivated:
+\@tabcommandsoff
+
+% define \normalshape if not present:
+\@ifundefined{normalshape}
+ {\def\normalshape{\rm}}
+ {\relax}
+
+% Underline through descenders:
+\let\undertext=\underbar
+\def\lowundertext#1{\ifmmode\underline{\vphantom{y}\mbox{#1}}\else
+ $\underline{\vphantom{y}\mbox{#1}}$\fi}
+
+% The Boolean values:
+\def\true{\boldvar{true}}
+\def\false{\boldvar{false}}
+
+% The simple programs:
+\def\ABORT{\boldvar{abort}}
+\def\SKIP{\boldvar{skip}}
+\def\NULL{\boldvar{null}}
+
+% An abbreviation:
+\def\aeq{\ACTIONEQ}
+
+%% Draw a box round something in a program:
+\def\progbox#1{%
+ % Set #1 in a box, with no tab settings, and restore horizontal position:
+ \rlap{\kern-\fboxsep\kern-0.4pt%
+ \fbox{$\@tabcommandsoff\phantom{#1}$}}%
+ % Then set it again as normal:
+ #1\ }
+
+%% For a larger box, covering several lines, put \tl at the top left
+%% corner, and \br at the bottom right. THIS REQUIRES pstricks AND pst-node
+\def\tl{\llap{\rnode{tl}{\strut}\hspace{2pt}}}
+\def\br{\rlap{\hspace{2pt}\rnode{br}{\strut}}%
+ \ncangles[linewidth=0.4pt, linearc=0pt, nodesep=0pt, angle=90,%
+ armA=1.5ex, armB=1.5ex]{-}{tl}{br}%
+ \ncangles[linewidth=0.4pt, linearc=0pt, nodesep=0pt, angle=-90,%
+ armA=1.4ex, armB=1.4ex]{-}{br}{tl}}
+
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%% Section (2). |Variable_Names|
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+%%% We use an idea from Rainer Schopf's verbatim style
+%%% This allows !@#$%^&*() in variable names as well as _
+%%% This version should cope better with missing | delimiters:
+
+% First we define the default \variablefont, \variablefontend and \keyword:
+
+\newif\if@corr
+\def\no@corr{\do{.}\do{,}}
+\def\@corr{\def\do##1{\ifx\temp##1\@corrfalse\fi}\@corrtrue\no@corr
+ \if@corr\/\else\fi\endgroup\egroup} % put back the \egroup
+
+% The old default keyword style is bold underlined:
+% The old default variable font is slanted, so \variablefontend adds italic correction:
+\def\bfvariables{%
+ \let\variablefont=\sl%
+ \def\variablefontend##1{\begingroup\futurelet\temp\@corr}% gobble the \egroup
+ \def\keyword##1{\mbox{\underbar{\normalshape\bf ##1}}}
+ \def\boldvar##1{{\mbox{\normalshape\bf ##1}}}
+}
+
+% For sans-serif variables and keywords (no underbar):
+\def\sfvariables{%
+ \def\variablefont{\normalshape\sf}%
+ \def\variablefontend{}%
+ \def\keyword##1{\mbox{\normalshape\bf\sf ##1}}%
+ \def\boldvar##1{\mbox{\normalshape\bf\sf ##1}}%
+}
+
+% For sans-serif variables and keywords in CAPITALS
+% (As required for Oberon and Modula)
+% This command was submitted by Matteo Corti <corti@inf.ethz.ch>:
+\def\bigcaps{%
+ \def\variablefont{\normalshape\sf}%
+ \def\variablefontend{}%
+ \def\keyword##1{\mbox{\uppercase{##1}}}%
+ \def\boldvar##1{\mbox{\normalshape\bf\sf ##1}}%
+}
+
+
+% The new default is \sfvariables:
+
+\sfvariables
+
+
+% Use \scriptvar|foo| for sub/super-script variables:
+\def\scriptvariablefont{\scriptsize\@variablefont}%
+\def\scriptvar{\let\@variablefont=\variablefont%
+ \let\variablefont=\scriptvariablefont%
+ \let\@variablefontend=\variablefontend%
+ \def\variablefontend{\let\variablefont=\@variablefont%
+ \let\variablefontend=\@variablefontend%
+ \@variablefontend}}
+
+% This section is modified from verbatim.sty:
+\newif\ifwasinmmode \wasinmmodefalse
+\begingroup
+ \lccode`\~=`\^^M
+ \lccode`\V=`\V
+ \lowercase{%
+ \gdef\variable{% first save mmode status:
+ \ifmmode\wasinmmodetrue\else\wasinmmodefalse\fi
+ \mbox\bgroup\begingroup
+ \variablefont
+ \catcode`\^^M\active
+ \safeat
+ \def~{\endgroup\egroup\\
+ \@latexerr{Variable name ended by end of line.}\@ehc}%
+ \catcode`\_\active
+ \let\do\@makeother
+ \do\{\do\}\do\$\do\&%
+ \do\#\do\^\do\^^K\do\^^A\do\%\do\~\do\@\@svariable}}
+\endgroup
+\def\@svariable{%
+ \catcode`\|\active
+ \lccode`\~`\|%
+ \lowercase{\def~{\endgroup% if we were not in mmode, do italic corr:
+ \ifwasinmmode\let\next=\/% was \relax
+ \else\let\next=\variablefontend\fi
+ \next
+ \egroup}%
+ \let\@dovar~}%
+ \leavevmode\null}
+
+\catcode`\|=12\relax
+\let\origbar=|
+\catcode`\|\active
+
+% Make @ active and equal to \char 64:
+\begingroup
+ \catcode`\@=\active
+ \gdef\safeat{\catcode`\@=\active\def@{\char64\relax}}%
+\endgroup
+
+\def|{\ifx\@sharp\relax\origbar\else\relax\p@dovar\fi}
+\def\p@dovar#1{#1\protect\@dovar\null}
+\def\@dovar{\variable} % #1 = \fi from defn of |
+
+%% Set up _ as \_ outside math mode and \sb in math mode:
+%% (in case you use _ outside math mode)
+\catcode`\_=\active \def_{\ifmmode\sb\else\p@sb\fi}
+\def\p@sb{\protect\@sb}
+\def\@sb{\_}
+% Restore catcode of _ (due to clash with \includegraphics):
+\catcode`\_=8
+
+
+%% Make sure | still works in \verb and verbatim (it is now a "special"):
+\def\dospecials{\do\ \do\\\do\{\do\}\do\$\do\&%
+ \do\#\do\^\do\_\do\%\do\~\do\|\do\@}
+
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%% Section (3). Program Schemas.
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+% Definitions for bold subscripted symbols, eg:
+% \B1 or \B{} or \B{12} ... etc.
+% We check for ' so \B', \S''' etc will work as expected.
+\def\A{\boldsub{A}}
+\def\B{\boldsub{B}}
+\def\P{\boldsub{P}}
+\def\Q{\boldsub{Q}}
+\def\R{\boldsub{R}}
+\def\S{\boldsub{S}}
+\def\T{\boldsub{T}}
+\def\Z{\boldsub{Z}}
+
+% some bold letters:
+\def\d{\boldsub{d}}
+\def\e{\boldsub{e}}
+\def\t{\boldsub{t}}
+\def\w{\boldsub{w}}
+\def\x{\boldsub{x}}
+\def\y{\boldsub{y}}
+\def\z{\boldsub{z}}
+
+\newif\ifMmode \Mmodefalse
+
+\def\boldsub#1{%
+ \relax% to fool array and other alignments
+ \ifmmode
+ \Mmodetrue
+ \else
+ $\Mmodefalse
+ \fi
+ \mbox{\normalshape\bf #1}%
+ \@boldsub
+}
+
+\def\boldsubm#1{%
+ \relax% to fool array and other alignments
+ \ifmmode
+ \Mmodetrue
+ \else
+ $\Mmodefalse
+ \fi
+ \boldsymbol{#1}%
+ \@boldsub
+}
+
+ % Use \mathchoice (typesets all 4) if this is needed for
+ % subscripts or superscripts (costs ~0.5 seconds per symbol!):
+ % NB use of \text should fix this with AMSLaTeX.
+ %\mathchoice{\mbox{\series{bx}\shape{n}\selectfont #1}}%
+ % {\mbox{\series{bx}\shape{n}\selectfont #1}}%
+ % {\mbox{\normalshape\bf\scriptsize #1}}%
+ % {\mbox{\normalshape\bf\tiny #1}}%
+
+\def\@nothing{} \def\prog@prime{'}
+\def\@boldsub#1{%
+ \def\@boldsubthing{#1}% subscript
+ \ifx\@boldsubthing\@nothing% empty
+ \let\@boldsubnext\@boldsubfinish
+ \else
+ \ifx\@boldsubthing\prog@prime%
+ \def\@boldsubnext{^\bgroup\prime\@absorbprimes}%
+ \else
+ \def\@boldsubnext{_{#1}\@boldsubfinish}\fi
+ \fi
+ \@boldsubnext
+}
+
+\def\@absorbprimes{\futurelet\@boldsubnext\@seeifprime}
+\def\@seeifprime{%
+ \ifx\@boldsubnext'%
+ \def\@boldsubnext{\@getprime}%
+ \else
+ \def\@boldsubnext{\egroup\@boldsubfinish}%
+ \fi
+ \@boldsubnext
+}
+\def\@getprime'{\prime\@absorbprimes}
+\def\@boldsubfinish{\ifMmode\else$\fi}
+
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%% Section (4). Maths notation used in programs
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+% Notation for sets of the form {...|...} :
+% Eg: \set{x \in N | x>0} becomes:
+% \left\{\left.\, x \in N \:\right\origbar\: x>0 \,\right\}
+% set brackets and | grow to fit the size if their contents.
+% Also: \bigset{...|...} becomes:
+% \bigl\{\, ... \mathrel{\bigm\origbar} ... \, \bigr\}
+% \bigset is in an aligned environment, so it can include \\
+% (AMSLaTeX only)
+%
+\def\set#1{\@@set#1\@end} % strip of the {} and pass to \@@set
+\def\@@set#1|#2\@end{\left\{\left.\, #1 \:\right\origbar\:
+ #2 \,\right\} }
+\def\bigset#1{\@bigset#1\@end} % strip of the {} and pass to \@bigset
+\@ifundefined{aligned}
+{% Not AMSLaTeX:
+ \def\@bigset#1|#2\@end{\bigl\{\, #1 {\:\bigm\origbar\:}
+ #2 \,\bigr\} }
+}{% With AMSLaTeX:
+ \def\@bigset#1|#2\@end{\begin{aligned}[t]\bigl\{\, #1 {\:\bigm\origbar\:}&
+ \let\@oldcr=\\\def\\{\@oldcr&{}}
+ #2 \,\bigr\} \end{aligned} }
+}
+
+% Notation for substitution in programs:
+\def\sub[#1/#2|#3]{\left[\left.#1\,/\,#2\,\right\origbar\,#3\,\right]}
+\def\bigsub[#1/#2|#3]{\bigl[#1\,\bigm/\,#2\,\bigm\origbar\,#3\,\bigr]}
+% Use \modbar{x} for |x|:
+\def\modbar#1{\left\origbar #1\right\origbar}
+
+% Notation for a sequence in angle brackets:
+% \bigseq uses big size of brackets:
+% \def\seq#1{\left< #1 \right>}
+\def\seq#1{\langle #1 \rangle}
+\def\bigseq#1{\bigl< #1 \bigr>}
+
+% Notation for subsequences analogous to set notation:
+\def\subseq#1{\@@subseq#1\@end} % strip of the {} and pass to \@@subseq
+\def\@@subseq#1|#2\@end{\left<\left.\, #1 \:\right\origbar\:
+ #2 \,\right>}
+\def\bigsubseq#1{\@bigsubseq#1\@end} % strip of the {} and pass to \@bigsubseq
+\@ifundefined{aligned}
+{% Not AMSLaTeX:
+ \def\@bigsubseq#1|#2\@end{\bigl<\, #1 {\:\bigm\origbar\:}
+ #2 \,\bigr> }
+}{% With AMSLaTeX:
+ \def\@bigsubseq#1|#2\@end{\begin{aligned}[t]\bigl<\, #1 {\:\bigm\origbar\:}&
+ \let\@oldcr=\\\def\\{\@oldcr&{}}
+ #2 \,\bigr> \end{aligned} }
+}
+
+% range dots, like \ldots but with two dots only (for 1..n etc.):
+\def\rdots{\mathinner{\ldotp\ldotp}}
+
+% Atomic Specification statement: for eg <x>/<y>.Q use: \atspec x/y. Q
+% This uses "/" and "." as argument delimiters:
+% \def\atspec #1/#2.{\seq{#1}\!/\!\seq{#2}\!.}
+\def\atspec #1/#2.{\seq{#1}/\seq{#2}.}
+
+% \Forall vars.formula and \Exists vars.formula:
+\def\Forall#1.{\forall #1.\,}
+\def\Exists#1.{\exists #1.\,}
+
+\let\EQspace=\ % default space around \EQ \EQT and \LE
+\def\EQT{\mathrel{\EQspace\approx\EQspace}} % program equivalence.
+\def\LE{\mathrel{\EQspace\le\EQspace}} % program refinement.
+\def\SLE{\mathrel{\EQspace\preccurlyeq\EQspace}} % semi-refinement.
+\def\NOT{\neg}
+% \AND and \OR relations have an extra thin space around them:
+\def\AND{\mathrel{\,\wedge\,}}
+\def\OR{\mathrel{\,\vee\,}}
+\def\EOR{\mathrel{\,\oplus\,}}
+\def\sbs{\subseteq}
+\def\im{\Rightarrow}
+% (use \iff and \implies for the "long" arrows)
+\def\union{\cup}
+\def\intersect{\cap}
+\def\lar{\leftarrow}
+\def\rar{\rightarrow}
+\def\wflt{\prec}
+\def\wfle{\preccurlyeq}
+\def\succstar{\mathrel{\succ\!\!^*}}
+\def\succeqstar{\mathrel{\succeq\!^*}}
+\def\gt{\ifmmode>\else{$>$}\fi}
+\def\lt{\ifmmode<\else{$<$}\fi}
+\def\tw{\ifmmode{}^\sim\else{${}^\sim$}\fi}
+
+
+% map and reduce operators:
+\def\bstar{\mathrel{\boldsymbol{*}}} % for *
+\def\bdiv{\boldsymbol{/}} % for /
+
+
+% Various arrows (taken from oz.sty):
+\let \rel \leftrightarrow
+\let \tfun \rightarrow
+\let \tinj \rightarrowtail
+\def \tsur {\mathrel{\ooalign{$\tfun$\hfil\cr$\mkern4mu\tfun$}}}
+\def \pfun {\p\tfun}
+\def \pinj {\p\tinj}
+\def \psur {\p\tsur}
+\def \ffun {\f\tfun}
+\def \finj {\f\tinj}
+\def \bij {\mathrel{\ooalign{$\tinj$\hfil\cr$\mkern5mu\tfun$}}}
+\def\p#1{\mathrel{\ooalign{\hfil$\mapstochar\mkern 5mu$\hfil\cr$#1$}}}
+\def\f#1{\mathrel{\ooalign{\hfil
+ $\mapstochar\mkern 3mu\mapstochar\mkern 5mu$\hfil\cr$#1$}}}
+
+%% Logical exclusive or:
+\def\exor{\oplus}
+
+%% Sequence concatenation:
+\def\concat{\mathrel{+\!\!\!+}}
+
+\def\rmtiny{\normalshape\rm\tiny}
+
+%% Stack operations:
+\def\push{\mathrel{\overset{\mbox{\rmtiny push}}{\longleftarrow}}}
+\def\pop {\mathrel{\overset{\mbox{\rmtiny pop}}{\longleftarrow}}}
+\def\pick{\mathrel{\overset{\mbox{\rmtiny pick}}{\longleftarrow}}}
+\def\last{\mathrel{\overset{\mbox{\rmtiny last}}{\longleftarrow}}}
+
+%% bitwise operators
+\def\bitand {\mathrel{\overset{\mbox{\tiny bit}}{\wedge}}}
+\def\bitor {\mathrel{\overset{\mbox{\tiny bit}}{\vee}}}
+\def\bitexor{\mathrel{\overset{\mbox{\tiny bit}}{\vphantom\vee\smash\oplus}}}
+\def\bitnot{{\overset{\mbox{\tiny bit}}{\vphantom\vee\neg}}}
+
+%% Logical, decimal and floating point operators:
+\def\lplus {\mathrel{\overset{\mbox{\tiny log}}{+}}}
+\def\lminus{\mathrel{\overset{\mbox{\tiny log}}{-}}}
+\def\lmult {\mathrel{\overset{\mbox{\tiny log}}{\times}}}
+\def\ldiv {\mathrel{\overset{\mbox{\tiny log}}{\div}}}
+\def\lequ {\mathrel{\overset{\mbox{\tiny log}}{=}}}
+\def\lneq {\mathrel{\overset{\mbox{\tiny log}}{\neq}}}
+\def\lless {\mathrel{\overset{\mbox{\tiny log}}{<}}}
+\def\lgreat{\mathrel{\overset{\mbox{\tiny log}}{>}}}
+\def\lleq {\mathrel{\overset{\mbox{\tiny log}}{\leq}}}
+\def\lgreq {\mathrel{\overset{\mbox{\tiny log}}{\geq}}}
+\def\dplus {\mathrel{\overset{\mbox{\tiny dec}}{+}}}
+\def\dminus{\mathrel{\overset{\mbox{\tiny dec}}{-}}}
+\def\dmult {\mathrel{\overset{\mbox{\tiny dec}}{\times}}}
+\def\ddiv {\mathrel{\overset{\mbox{\tiny dec}}{\div}}}
+\def\deq {\mathrel{\overset{\mbox{\tiny dec}}{=}}}
+\def\dneq {\mathrel{\overset{\mbox{\tiny dec}}{\neq}}}
+\def\dless {\mathrel{\overset{\mbox{\tiny dec}}{<}}}
+\def\dgreat{\mathrel{\overset{\mbox{\tiny dec}}{>}}}
+\def\dleq {\mathrel{\overset{\mbox{\tiny dec}}{\leq}}}
+\def\dgreq {\mathrel{\overset{\mbox{\tiny dec}}{\geq}}}
+\def\fplus {\mathrel{\overset{\mbox{\tiny fpt}}{+}}}
+\def\fminus{\mathrel{\overset{\mbox{\tiny fpt}}{-}}}
+\def\fmult {\mathrel{\overset{\mbox{\tiny fpt}}{\times}}}
+\def\fdiv {\mathrel{\overset{\mbox{\tiny fpt}}{\div}}}
+\def\feq {\mathrel{\overset{\mbox{\tiny fpt}}{=}}}
+\def\fneq {\mathrel{\overset{\mbox{\tiny fpt}}{\neq}}}
+\def\fless {\mathrel{\overset{\mbox{\tiny fpt}}{<}}}
+\def\fgreat{\mathrel{\overset{\mbox{\tiny fpt}}{>}}}
+\def\fleq {\mathrel{\overset{\mbox{\tiny fpt}}{\leq}}}
+\def\fgreq {\mathrel{\overset{\mbox{\tiny fpt}}{\geq}}}
+
+%% mod and div:
+\def\MOD{\mathrel{\text{mod}}}
+\def\DIV{\mathrel{\text{div}}}
+
+%% add the definition of overset if not present:
+\@ifundefined{overset}%
+ {\def\overset#1#2{\binrel@{#2}%
+ \binrel@@{\mathop{\kern\z@#2}\limits^{#1}}}
+ \def\binrel@#1{\setboxz@h{\thinmuskip0mu
+ \medmuskip\m@ne mu\thickmuskip\@ne mu$#1\m@th$}%
+ \setbox@ne\hbox{\thinmuskip0mu\medmuskip\m@ne mu\thickmuskip
+ \@ne mu${}#1{}\m@th$}%
+ \setbox\tw@\hbox{\hskip\wd@ne\hskip-\wdz@}}
+ \def\binrel@@#1{\ifdim\wd2<\z@\mathbin{#1}\else\ifdim\wd\tw@>\z@
+ \mathrel{#1}\else{#1}\fi\fi}%
+ \def\setboxz@h{\setbox\z@\hbox}%
+ \def\setbox@ne{\setbox\@ne}%
+ \def\wd@ne{\wd\@ne}%
+ \def\wdz@{\wd\z@}%
+ }{}
+
+%% =df symbol (with thick space around it):
+\def\edf{\mathrel{\;=_{{}_{\mbox{\rmtiny DF}}}\;}}
+
+%% empty set symbol: (use \varnothing if available)
+\@ifundefined{varnothing}%
+ {\let\nullset=\emptyset}%
+ {\let\nullset=\varnothing}%
+
+%% Powerset symbol:
+\@ifundefined{DeclareMathSymbol}{%
+%% check if \teurm defined - if not then use \oldwp (Large and raised):
+\@ifundefined{teurm}%
+ {\def\powerset{\raisebox{0.5ex}{\Large$\oldwp$}}}% no \eurm
+ {\def\powerset{\raisebox{0.5ex}{\Large\teurm\char"7D}}}% Use Euler roman p
+}{%
+\DeclareSymbolFont{eulerletters}{U}{eur}{m}{n}%
+\DeclareMathSymbol{\powersetsymbol}{\mathord}{eulerletters}{"7D}%
+\newsavebox{\powersetbox}
+\sbox{\powersetbox}{\raisebox{0.5ex}{\mbox{\Large$\powersetsymbol$}}}
+\def\powerset{\usebox{\powersetbox}}
+% old defn -- with amslatex this makes the whole maths item \Large!
+%\def\powerset{\raisebox{0.5ex}{\Large$\powersetsymbol$}}
+}%
+
+
+%% The stmaryrd style and fonts include \bigsqcap, but if you don't have
+%% it, here is an alternative using rules (only works at standard size):
+\@ifundefined{bigsqcap}
+ {\def\bigsqcap{\mathop{%
+ \rule[-0.2ex]{.07em}{2.17ex}%
+ \rule[1.8ex]{0.5em}{.17ex}%
+ \rule[-0.2ex]{.07em}{2.17ex}}}}
+ {\relax}
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%% Section (5). Miscellaneous bits and pieces
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+%% Substitute for some AMSLaTeX things if they are missing:
+\@ifundefined{text}{\let\text=\mbox}{}
+\@ifundefined{boldsymbol}{\def\boldsymbol#1{\mbox{\bf #1}}}{}
+\@ifundefined{implies}{\def\implies{\;\Longrightarrow\;}}{}
+\@ifundefined{operatorname}{\def\operatorname#1{\mathop{#1}}}{}
+
+
+% \snugbox is by Victor Eijhout, eijkhout@cs.utk.edu, TUGboat 13, 1, 1992.
+% It sets a box containing paragraphs as wide ``as it really is''
+\def\snugbox{\mbox\bgroup
+% ^^^^^ changed from \hbox by M.Ward
+ \setbox\z@\vbox\bgroup
+ \leftskip\z@
+ \bgroup\aftergroup\make@snug
+ \let\next=}
+\def\make@snug{\par\sn@gify\egroup
+ \box\z@\egroup}
+\def\sn@gify
+ {\skip\z@=\lastskip \unskip
+ \advance\skip\z@\lastskip \unskip
+ \unpenalty
+ \setbox\z@\lastbox
+ \ifvoid\z@ \nointerlineskip
+ \else {\sn@gify} \fi
+ \hbox{\unhbox\z@}\nointerlineskip
+ \vskip\skip\z@
+ }
+% To vertically centre the box:
+\def\textvcenter{\hbox\bgroup$
+ \everyvbox{\everyvbox{}%
+ \aftergroup$%
+ \aftergroup\egroup}
+ \vcenter}
+
+
+%% Cases environment:
+%% based on description environment with numbering:
+\def\Cases{
+ \ifnum \@enumdepth >3 \@toodeep\else
+ \advance\@enumdepth \@ne
+ \edef\@enumctr{enum\romannumeral\the\@enumdepth}%
+ \@ifundefined{mathindent}
+ {\list{\kern-1em\hbox{\normalshape\bf Case \arabic{\@enumctr}:}}%
+ {\usecounter{\@enumctr}%
+ \def\makelabel##1{##1}}}%
+ {\list{\kern-1em\hbox{\normalshape\bf Case \arabic{\@enumctr}:}}%
+ {\mathindent 0pt \usecounter{\@enumctr}%
+ \def\makelabel##1{##1}}}%
+ \fi}
+
+\let\endCases=\endlist
+
+%% \CASES is redundant with amstex.sty
+\def\CASES#1{\left\{\,\vcenter{{\let\\=\cr\normalbaselines\m@th
+ \ialign{$##\hfil$&\quad##\hfil\crcr#1\crcr}}}\right.}
+
+%% Environment romanenumerate for lists numbered by roman numerals:
+\def\romanenumerate{\begingroup
+ \def\theenumi{\normalshape(\myroman{enumi})}%
+ \def\p@enumi{}%
+ \def\labelenumi{\theenumi}%
+ \enumerate}
+\def\endromanenumerate{\endenumerate\endgroup}
+
+%% A fix to get lower case Roman numerals for use as labels:
+\def\myroman#1{\@myroman{\@nameuse{c@#1}}}
+\def\@myroman#1{\expandafter{\romannumeral #1}}
+
+%% \proof macro for theorems and lemmas:
+\def\proof{\normalshape{\setlength{\parskip}{0pt}\par\addvspace\medskipamount
+ \noindent{\bf Proof: }}\ignorespaces}
+
+%% require the {...} for \wp and \WP
+\let\oldwp=\wp % save old \wp (curly p character)
+%\def\wp#{\@wp}
+%\def\@wp#1{\mbox{\normalshape wp}(#1)}
+%\def\WP#{\@WP}
+%\def\@WP#1{\mbox{\normalshape WP}(#1)}
+%% Don't require {...}, ie use normal parentheses where required:
+\def\wp{\mbox{\normalshape wp}}
+\def\WP{\mbox{\normalshape WP}}
+
+
+%% Two line displayed equation, eg:
+%% \[ \twoline{ a_very_long_left_hand_side \\
+%% {} = a_fairly_long_right_hand_side } \]
+%% Use in displayed maths mode.
+%% NB this is superseded by AMSLaTeX's multline environment.
+\def\twoline#1{\def\\{\hfill\cr\hfill}% \def only lasts to end of display
+ \displaylines{\quad #1 \quad\cr}}
+
+%% Add a definition of \Bbb if not present:
+% We use poor man's bold to give an ``extra bold'' letter:
+\@ifundefined{Bbb}
+ {\def\Bbb{\protect\pBbb}
+ \def\pBbb#1{\setbox0=\hbox{\bf #1}
+ \kern-.025em\copy0\kern-\wd0
+ \kern.05em\copy0\kern-\wd0
+ \kern-.025em\raise.0433em\box0 }}
+ {\relax}
+
+%% Add a definition of cases environment if not present:
+\@ifundefined{endcases}
+ {\def\cases{\left\{\def\arraystretch{1.2}\hskip-\arraycolsep
+ \array{l@{\quad}l}}
+ \def\endcases{\endarray\hskip-\arraycolsep\right.}}
+ {\relax}
+
+%% draw a line across the page:
+\def\dashes{$\makebox[6in]{\hrulefill}$}
+
+%% A \qed command for the end of a proof:
+\@ifundefined{blacksquare}
+ {\def\qedsymbol{\vrule width.6em height.5em depth.1em\relax}}
+ {\let\qedsymbol=\blacksquare}
+\def\qed{\ifx\\\@eqncr\let\next\eqnarrayqed\else
+ \ifmmode\let\next\eqnqed\else
+ \let\next\textqed\fi\fi\next}
+%\def\eqnqed#1\]{\belowdisplayskip\z@\belowdisplayshortskip\z@
+% \postdisplaypenalty\@M\relax#1
+% \]\par{\lineskip\z@\baselineskip\z@\vbox to\z@{\vss\noindent\textqed}}}
+%% simpler version from ROGERS@se.physto.vana using the primitive \eqno:
+\def\eqnqed#1\]{\relax#1\eqno\qedsymbol$$\ignorespaces}
+\def\textqed{{\unskip\nobreak\hfil\penalty50\hskip2em\null\nobreak\hfil
+ $\qedsymbol$\parfillskip\z@\finalhyphendemerits0\par}}
+\def\eqnarrayqed{\\\noalign{\vspace{-\jot}%
+ {\lineskip\z@\baselineskip\z@%
+ \vbox to\z@{\vss\noindent\textqed}}%
+ \vspace{-\baselineskip}}}
+
+
+%% A crude method of allowing URLs to break across lines: sprinkle ~'s
+%% inside your \www{...} command, eg:
+%% \www{http://~ws-mj3.~dur.~ac.~uk/~martin/~papers/~ref-ws-5.ps.gz}
+
+\def\www{\bgroup\def~{\hskip 1pt plus 3pt minus 1pt\relax}\www@}
+\def\www@#1{$\langle$#1$\rangle$\egroup}
+
+%% Fix the use of | in \index:
+
+\def\makeindex{%
+ \newwrite\@indexfile
+ \immediate\openout\@indexfile=\jobname.idx
+ \def\index{\@bsphack\begingroup
+ \catcode`\|=12
+ \@sanitize
+ \@wrindex}\typeout
+ {Writing index file \jobname.idx}%
+ \let\makeindex\@empty
+}
+\def\index{\@bsphack\begingroup\catcode`\|=12\@sanitize\@index}
+