1 <!ENTITY % inline "#PCDATA | emph | strong | code | remark | sub | sup | label | ref | page | reference | index | newline | newpage | LaTeX">
3 <!ENTITY % block "para | quote | itemize | enumerate | description | verbatim | footnote | picture | include | table">
5 <!ELEMENT doc (book | article | report)>
10 <!ELEMENT book (titlepage?, toc?, (chapter|include)*)>
11 <!ELEMENT article (titlepage?, toc?, (section|include)*)>
12 <!ELEMENT report (titlepage?, toc?, (chapter|include)*)>
14 <!ELEMENT titlepage (title, subtitle*, author+, date?, docinfo?, abstract?)>
16 <!ELEMENT title (%inline;)*>
17 <!ELEMENT subtitle (%inline;)*>
18 <!ELEMENT author (%inline;)*>
19 <!ELEMENT date (%inline;)*>
20 <!ELEMENT docinfo (infoitem)+>
21 <!ELEMENT infoitem (%inline;)*>
26 <!ELEMENT abstract (%inline;)*>
30 <!-- Document structure: chapters and sections -->
32 <!ELEMENT chapter (heading, (%block;)*, section*)>
33 <!ELEMENT section (heading, (%block;)*, subsection*)>
34 <!ELEMENT subsection (heading, (%block;)*, subsubsection*)>
35 <!ELEMENT subsubsection (heading, (%block;)*, paragraph*)>
36 <!ELEMENT paragraph (heading, (%block;)*, subparagraph*)>
37 <!ELEMENT subparagraph (heading, (%block;)*)>
38 <!ELEMENT heading (%inline;)*>
40 <!-- Block level content -->
42 <!ELEMENT para (%inline;|%block;)*>
43 <!ELEMENT quote (%inline;|%block;)*>
44 <!ELEMENT itemize (item)*>
45 <!ELEMENT enumerate (item)*>
46 <!ELEMENT description (item)*>
47 <!ELEMENT item (%inline;|%block;)*>
51 <!ELEMENT verbatim (#PCDATA)>
52 <!ELEMENT footnote (%inline;)*>
54 <!-- Inline content: type styles -->
56 <!ELEMENT emph (%inline;)*>
57 <!ELEMENT strong (%inline;)*>
58 <!ELEMENT code (%inline;)*>
59 <!ELEMENT remark (%inline;)*>
60 <!ELEMENT sub (%inline;)*>
61 <!ELEMENT sup (%inline;)*>
63 <!ELEMENT newline EMPTY>
64 <!ELEMENT newpage EMPTY>
66 <!-- Internal and external references -->
68 <!ELEMENT label EMPTY>
73 <!ELEMENT index (#PCDATA)>
75 <!ELEMENT ref (%inline;)*>
80 <!ELEMENT page (%inline;)*>
85 <!ELEMENT reference (%inline;)*>
88 xml:link CDATA #IMPLIED
93 <!ELEMENT table (thead?,row)+>
95 <!ELEMENT thead (col)+>
96 <!ELEMENT col (%inline;|%block;)*>
102 <!ELEMENT picture EMPTY>
109 <!ELEMENT include EMPTY>
114 <!ELEMENT LaTeX EMPTY>
116 command CDATA #REQUIRED
122 The entities define most of the well known unicode characters
126 <!ENTITY nbsp " "> <!-- no-break space = non-breaking space,
128 <!ENTITY iexcl "¡"> <!-- inverted exclamation mark, U+00A1 ISOnum -->
129 <!ENTITY cent "¢"> <!-- cent sign, U+00A2 ISOnum -->
130 <!ENTITY pound "£"> <!-- pound sign, U+00A3 ISOnum -->
131 <!ENTITY curren "¤"> <!-- currency sign, U+00A4 ISOnum -->
132 <!ENTITY yen "¥"> <!-- yen sign = yuan sign, U+00A5 ISOnum -->
133 <!ENTITY brvbar "¦"> <!-- broken bar = broken vertical bar,
135 <!ENTITY sect "§"> <!-- section sign, U+00A7 ISOnum -->
136 <!ENTITY uml "¨"> <!-- diaeresis = spacing diaeresis,
138 <!ENTITY copy "©"> <!-- copyright sign, U+00A9 ISOnum -->
139 <!ENTITY ordf "ª"> <!-- feminine ordinal indicator, U+00AA ISOnum -->
140 <!ENTITY laquo "«"> <!-- left-pointing double angle quotation mark
141 = left pointing guillemet, U+00AB ISOnum -->
142 <!ENTITY not "¬"> <!-- not sign, U+00AC ISOnum -->
143 <!ENTITY shy "­"> <!-- soft hyphen = discretionary hyphen,
145 <!ENTITY reg "®"> <!-- registered sign = registered trade mark sign,
147 <!ENTITY macr "¯"> <!-- macron = spacing macron = overline
148 = APL overbar, U+00AF ISOdia -->
149 <!ENTITY deg "°"> <!-- degree sign, U+00B0 ISOnum -->
150 <!ENTITY plusmn "±"> <!-- plus-minus sign = plus-or-minus sign,
152 <!ENTITY sup2 "²"> <!-- superscript two = superscript digit two
153 = squared, U+00B2 ISOnum -->
154 <!ENTITY sup3 "³"> <!-- superscript three = superscript digit three
155 = cubed, U+00B3 ISOnum -->
156 <!ENTITY acute "´"> <!-- acute accent = spacing acute,
158 <!ENTITY micro "µ"> <!-- micro sign, U+00B5 ISOnum -->
159 <!ENTITY para "¶"> <!-- pilcrow sign = paragraph sign,
161 <!ENTITY middot "·"> <!-- middle dot = Georgian comma
162 = Greek middle dot, U+00B7 ISOnum -->
163 <!ENTITY cedil "¸"> <!-- cedilla = spacing cedilla, U+00B8 ISOdia -->
164 <!ENTITY sup1 "¹"> <!-- superscript one = superscript digit one,
166 <!ENTITY ordm "º"> <!-- masculine ordinal indicator,
168 <!ENTITY raquo "»"> <!-- right-pointing double angle quotation mark
169 = right pointing guillemet, U+00BB ISOnum -->
170 <!ENTITY frac14 "¼"> <!-- vulgar fraction one quarter
171 = fraction one quarter, U+00BC ISOnum -->
172 <!ENTITY frac12 "½"> <!-- vulgar fraction one half
173 = fraction one half, U+00BD ISOnum -->
174 <!ENTITY frac34 "¾"> <!-- vulgar fraction three quarters
175 = fraction three quarters, U+00BE ISOnum -->
176 <!ENTITY iquest "¿"> <!-- inverted question mark
177 = turned question mark, U+00BF ISOnum -->
178 <!ENTITY Agrave "À"> <!-- latin capital letter A with grave
179 = latin capital letter A grave,
181 <!ENTITY Aacute "Á"> <!-- latin capital letter A with acute,
183 <!ENTITY Acirc "Â"> <!-- latin capital letter A with circumflex,
185 <!ENTITY Atilde "Ã"> <!-- latin capital letter A with tilde,
187 <!ENTITY Auml "Ä"> <!-- latin capital letter A with diaeresis,
189 <!ENTITY Aring "Å"> <!-- latin capital letter A with ring above
190 = latin capital letter A ring,
192 <!ENTITY AElig "Æ"> <!-- latin capital letter AE
193 = latin capital ligature AE,
195 <!ENTITY Ccedil "Ç"> <!-- latin capital letter C with cedilla,
197 <!ENTITY Egrave "È"> <!-- latin capital letter E with grave,
199 <!ENTITY Eacute "É"> <!-- latin capital letter E with acute,
201 <!ENTITY Ecirc "Ê"> <!-- latin capital letter E with circumflex,
203 <!ENTITY Euml "Ë"> <!-- latin capital letter E with diaeresis,
205 <!ENTITY Igrave "Ì"> <!-- latin capital letter I with grave,
207 <!ENTITY Iacute "Í"> <!-- latin capital letter I with acute,
209 <!ENTITY Icirc "Î"> <!-- latin capital letter I with circumflex,
211 <!ENTITY Iuml "Ï"> <!-- latin capital letter I with diaeresis,
213 <!ENTITY ETH "Ð"> <!-- latin capital letter ETH, U+00D0 ISOlat1 -->
214 <!ENTITY Ntilde "Ñ"> <!-- latin capital letter N with tilde,
216 <!ENTITY Ograve "Ò"> <!-- latin capital letter O with grave,
218 <!ENTITY Oacute "Ó"> <!-- latin capital letter O with acute,
220 <!ENTITY Ocirc "Ô"> <!-- latin capital letter O with circumflex,
222 <!ENTITY Otilde "Õ"> <!-- latin capital letter O with tilde,
224 <!ENTITY Ouml "Ö"> <!-- latin capital letter O with diaeresis,
226 <!ENTITY times "×"> <!-- multiplication sign, U+00D7 ISOnum -->
227 <!ENTITY Oslash "Ø"> <!-- latin capital letter O with stroke
228 = latin capital letter O slash,
230 <!ENTITY Ugrave "Ù"> <!-- latin capital letter U with grave,
232 <!ENTITY Uacute "Ú"> <!-- latin capital letter U with acute,
234 <!ENTITY Ucirc "Û"> <!-- latin capital letter U with circumflex,
236 <!ENTITY Uuml "Ü"> <!-- latin capital letter U with diaeresis,
238 <!ENTITY Yacute "Ý"> <!-- latin capital letter Y with acute,
240 <!ENTITY THORN "Þ"> <!-- latin capital letter THORN,
242 <!ENTITY szlig "ß"> <!-- latin small letter sharp s = ess-zed,
244 <!ENTITY agrave "à"> <!-- latin small letter a with grave
245 = latin small letter a grave,
247 <!ENTITY aacute "á"> <!-- latin small letter a with acute,
249 <!ENTITY acirc "â"> <!-- latin small letter a with circumflex,
251 <!ENTITY atilde "ã"> <!-- latin small letter a with tilde,
253 <!ENTITY auml "ä"> <!-- latin small letter a with diaeresis,
255 <!ENTITY aring "å"> <!-- latin small letter a with ring above
256 = latin small letter a ring,
258 <!ENTITY aelig "æ"> <!-- latin small letter ae
259 = latin small ligature ae, U+00E6 ISOlat1 -->
260 <!ENTITY ccedil "ç"> <!-- latin small letter c with cedilla,
262 <!ENTITY egrave "è"> <!-- latin small letter e with grave,
264 <!ENTITY eacute "é"> <!-- latin small letter e with acute,
266 <!ENTITY ecirc "ê"> <!-- latin small letter e with circumflex,
268 <!ENTITY euml "ë"> <!-- latin small letter e with diaeresis,
270 <!ENTITY igrave "ì"> <!-- latin small letter i with grave,
272 <!ENTITY iacute "í"> <!-- latin small letter i with acute,
274 <!ENTITY icirc "î"> <!-- latin small letter i with circumflex,
276 <!ENTITY iuml "ï"> <!-- latin small letter i with diaeresis,
278 <!ENTITY eth "ð"> <!-- latin small letter eth, U+00F0 ISOlat1 -->
279 <!ENTITY ntilde "ñ"> <!-- latin small letter n with tilde,
281 <!ENTITY ograve "ò"> <!-- latin small letter o with grave,
283 <!ENTITY oacute "ó"> <!-- latin small letter o with acute,
285 <!ENTITY ocirc "ô"> <!-- latin small letter o with circumflex,
287 <!ENTITY otilde "õ"> <!-- latin small letter o with tilde,
289 <!ENTITY ouml "ö"> <!-- latin small letter o with diaeresis,
291 <!ENTITY divide "÷"> <!-- division sign, U+00F7 ISOnum -->
292 <!ENTITY oslash "ø"> <!-- latin small letter o with stroke,
293 = latin small letter o slash,
295 <!ENTITY ugrave "ù"> <!-- latin small letter u with grave,
297 <!ENTITY uacute "ú"> <!-- latin small letter u with acute,
299 <!ENTITY ucirc "û"> <!-- latin small letter u with circumflex,
301 <!ENTITY uuml "ü"> <!-- latin small letter u with diaeresis,
303 <!ENTITY yacute "ý"> <!-- latin small letter y with acute,
305 <!ENTITY thorn "þ"> <!-- latin small letter thorn with,
307 <!ENTITY yuml "ÿ"> <!-- latin small letter y with diaeresis,
310 <!-- Latin Extended-A -->
311 <!ENTITY OElig "Œ"> <!-- latin capital ligature OE,
313 <!ENTITY oelig "œ"> <!-- latin small ligature oe, U+0153 ISOlat2 -->
314 <!-- ligature is a misnomer, this is a separate character in some languages -->
315 <!ENTITY Scaron "Š"> <!-- latin capital letter S with caron,
317 <!ENTITY scaron "š"> <!-- latin small letter s with caron,
319 <!ENTITY Yuml "Ÿ"> <!-- latin capital letter Y with diaeresis,
323 <!ENTITY Alpha "Α"> <!-- greek capital letter alpha, U+0391 -->
324 <!ENTITY Beta "Β"> <!-- greek capital letter beta, U+0392 -->
325 <!ENTITY Gamma "Γ"> <!-- greek capital letter gamma,
327 <!ENTITY Delta "Δ"> <!-- greek capital letter delta,
329 <!ENTITY Epsilon "Ε"> <!-- greek capital letter epsilon, U+0395 -->
330 <!ENTITY Zeta "Ζ"> <!-- greek capital letter zeta, U+0396 -->
331 <!ENTITY Eta "Η"> <!-- greek capital letter eta, U+0397 -->
332 <!ENTITY Theta "Θ"> <!-- greek capital letter theta,
334 <!ENTITY Iota "Ι"> <!-- greek capital letter iota, U+0399 -->
335 <!ENTITY Kappa "Κ"> <!-- greek capital letter kappa, U+039A -->
336 <!ENTITY Lambda "Λ"> <!-- greek capital letter lambda,
338 <!ENTITY Mu "Μ"> <!-- greek capital letter mu, U+039C -->
339 <!ENTITY Nu "Ν"> <!-- greek capital letter nu, U+039D -->
340 <!ENTITY Xi "Ξ"> <!-- greek capital letter xi, U+039E ISOgrk3 -->
341 <!ENTITY Omicron "Ο"> <!-- greek capital letter omicron, U+039F -->
342 <!ENTITY Pi "Π"> <!-- greek capital letter pi, U+03A0 ISOgrk3 -->
343 <!ENTITY Rho "Ρ"> <!-- greek capital letter rho, U+03A1 -->
344 <!-- there is no Sigmaf, and no U+03A2 character either -->
345 <!ENTITY Sigma "Σ"> <!-- greek capital letter sigma,
347 <!ENTITY Tau "Τ"> <!-- greek capital letter tau, U+03A4 -->
348 <!ENTITY Upsilon "Υ"> <!-- greek capital letter upsilon,
350 <!ENTITY Phi "Φ"> <!-- greek capital letter phi,
352 <!ENTITY Chi "Χ"> <!-- greek capital letter chi, U+03A7 -->
353 <!ENTITY Psi "Ψ"> <!-- greek capital letter psi,
355 <!ENTITY Omega "Ω"> <!-- greek capital letter omega,
358 <!ENTITY alpha "α"> <!-- greek small letter alpha,
360 <!ENTITY beta "β"> <!-- greek small letter beta, U+03B2 ISOgrk3 -->
361 <!ENTITY gamma "γ"> <!-- greek small letter gamma,
363 <!ENTITY delta "δ"> <!-- greek small letter delta,
365 <!ENTITY epsilon "ε"> <!-- greek small letter epsilon,
367 <!ENTITY zeta "ζ"> <!-- greek small letter zeta, U+03B6 ISOgrk3 -->
368 <!ENTITY eta "η"> <!-- greek small letter eta, U+03B7 ISOgrk3 -->
369 <!ENTITY theta "θ"> <!-- greek small letter theta,
371 <!ENTITY iota "ι"> <!-- greek small letter iota, U+03B9 ISOgrk3 -->
372 <!ENTITY kappa "κ"> <!-- greek small letter kappa,
374 <!ENTITY lambda "λ"> <!-- greek small letter lambda,
376 <!ENTITY mu "μ"> <!-- greek small letter mu, U+03BC ISOgrk3 -->
377 <!ENTITY nu "ν"> <!-- greek small letter nu, U+03BD ISOgrk3 -->
378 <!ENTITY xi "ξ"> <!-- greek small letter xi, U+03BE ISOgrk3 -->
379 <!ENTITY omicron "ο"> <!-- greek small letter omicron, U+03BF NEW -->
380 <!ENTITY pi "π"> <!-- greek small letter pi, U+03C0 ISOgrk3 -->
381 <!ENTITY rho "ρ"> <!-- greek small letter rho, U+03C1 ISOgrk3 -->
382 <!ENTITY sigmaf "ς"> <!-- greek small letter final sigma,
384 <!ENTITY sigma "σ"> <!-- greek small letter sigma,
386 <!ENTITY tau "τ"> <!-- greek small letter tau, U+03C4 ISOgrk3 -->
387 <!ENTITY upsilon "υ"> <!-- greek small letter upsilon,
389 <!ENTITY phi "φ"> <!-- greek small letter phi, U+03C6 ISOgrk3 -->
390 <!ENTITY chi "χ"> <!-- greek small letter chi, U+03C7 ISOgrk3 -->
391 <!ENTITY psi "ψ"> <!-- greek small letter psi, U+03C8 ISOgrk3 -->
392 <!ENTITY omega "ω"> <!-- greek small letter omega,
395 <!-- special symbols -->
397 <!ENTITY dagger "†"> <!-- dagger, U+2020 ISOpub -->
398 <!ENTITY Dagger "‡"> <!-- double dagger, U+2021 ISOpub -->
400 <!-- General Punctuation -->
401 <!ENTITY bull "•"> <!-- bullet = black small circle,
403 <!-- bullet is NOT the same as bullet operator, U+2219 -->
404 <!ENTITY hellip "…"> <!-- horizontal ellipsis = three dot leader,
406 <!ENTITY prime "′"> <!-- prime = minutes = feet, U+2032 ISOtech -->
407 <!ENTITY Prime "″"> <!-- double prime = seconds = inches,
409 <!ENTITY oline "‾"> <!-- overline = spacing overscore,
412 <!ENTITY euro "€"> <!-- euro sign, U+20AC NEW -->
414 <!-- Letterlike Symbols -->
415 <!ENTITY weierp "℘"> <!-- script capital P = power set
416 = Weierstrass p, U+2118 ISOamso -->
417 <!ENTITY image "ℑ"> <!-- blackletter capital I = imaginary part,
419 <!ENTITY real "ℜ"> <!-- blackletter capital R = real part symbol,
421 <!ENTITY trade "™"> <!-- trade mark sign, U+2122 ISOnum -->
422 <!ENTITY alefsym "ℵ"> <!-- alef symbol = first transfinite cardinal,
424 <!-- alef symbol is NOT the same as hebrew letter alef,
425 U+05D0 although the same glyph could be used to depict both characters -->
428 <!ENTITY larr "←"> <!-- leftwards arrow, U+2190 ISOnum -->
429 <!ENTITY uarr "↑"> <!-- upwards arrow, U+2191 ISOnum-->
430 <!ENTITY rarr "→"> <!-- rightwards arrow, U+2192 ISOnum -->
431 <!ENTITY darr "↓"> <!-- downwards arrow, U+2193 ISOnum -->
432 <!ENTITY harr "↔"> <!-- left right arrow, U+2194 ISOamsa -->
433 <!ENTITY crarr "↵"> <!-- downwards arrow with corner leftwards
434 = carriage return, U+21B5 NEW -->
435 <!ENTITY lArr "⇐"> <!-- leftwards double arrow, U+21D0 ISOtech -->
436 <!-- Unicode does not say that lArr is the same as the 'is implied by' arrow
437 but also does not have any other character for that function. So ? lArr can
438 be used for 'is implied by' as ISOtech suggests -->
439 <!ENTITY uArr "⇑"> <!-- upwards double arrow, U+21D1 ISOamsa -->
440 <!ENTITY rArr "⇒"> <!-- rightwards double arrow,
442 <!-- Unicode does not say this is the 'implies' character but does not have
443 another character with this function so ?
444 rArr can be used for 'implies' as ISOtech suggests -->
445 <!ENTITY dArr "⇓"> <!-- downwards double arrow, U+21D3 ISOamsa -->
446 <!ENTITY hArr "⇔"> <!-- left right double arrow,
449 <!-- Mathematical Operators -->
450 <!ENTITY forall "∀"> <!-- for all, U+2200 ISOtech -->
451 <!ENTITY part "∂"> <!-- partial differential, U+2202 ISOtech -->
452 <!ENTITY exist "∃"> <!-- there exists, U+2203 ISOtech -->
453 <!ENTITY empty "∅"> <!-- empty set = null set = diameter,
455 <!ENTITY nabla "∇"> <!-- nabla = backward difference,
457 <!ENTITY isin "∈"> <!-- element of, U+2208 ISOtech -->
458 <!ENTITY notin "∉"> <!-- not an element of, U+2209 ISOtech -->
459 <!ENTITY ni "∋"> <!-- contains as member, U+220B ISOtech -->
460 <!-- should there be a more memorable name than 'ni'? -->
461 <!ENTITY prod "∏"> <!-- n-ary product = product sign,
463 <!-- prod is NOT the same character as U+03A0 'greek capital letter pi' though
464 the same glyph might be used for both -->
465 <!ENTITY sum "∑"> <!-- n-ary sumation, U+2211 ISOamsb -->
466 <!-- sum is NOT the same character as U+03A3 'greek capital letter sigma'
467 though the same glyph might be used for both -->
468 <!ENTITY minus "−"> <!-- minus sign, U+2212 ISOtech -->
469 <!ENTITY lowast "∗"> <!-- asterisk operator, U+2217 ISOtech -->
470 <!ENTITY radic "√"> <!-- square root = radical sign,
472 <!ENTITY prop "∝"> <!-- proportional to, U+221D ISOtech -->
473 <!ENTITY infin "∞"> <!-- infinity, U+221E ISOtech -->
474 <!ENTITY ang "∠"> <!-- angle, U+2220 ISOamso -->
475 <!ENTITY and "∧"> <!-- logical and = wedge, U+2227 ISOtech -->
476 <!ENTITY or "∨"> <!-- logical or = vee, U+2228 ISOtech -->
477 <!ENTITY cap "∩"> <!-- intersection = cap, U+2229 ISOtech -->
478 <!ENTITY cup "∪"> <!-- union = cup, U+222A ISOtech -->
479 <!ENTITY int "∫"> <!-- integral, U+222B ISOtech -->
480 <!ENTITY there4 "∴"> <!-- therefore, U+2234 ISOtech -->
481 <!ENTITY sim "∼"> <!-- tilde operator = varies with = similar to,
483 <!-- tilde operator is NOT the same character as the tilde, U+007E,
484 although the same glyph might be used to represent both -->
485 <!ENTITY cong "≅"> <!-- approximately equal to, U+2245 ISOtech -->
486 <!ENTITY asymp "≈"> <!-- almost equal to = asymptotic to,
488 <!ENTITY ne "≠"> <!-- not equal to, U+2260 ISOtech -->
489 <!ENTITY equiv "≡"> <!-- identical to, U+2261 ISOtech -->
490 <!ENTITY le "≤"> <!-- less-than or equal to, U+2264 ISOtech -->
491 <!ENTITY ge "≥"> <!-- greater-than or equal to,
493 <!ENTITY sub "⊂"> <!-- subset of, U+2282 ISOtech -->
494 <!ENTITY sup "⊃"> <!-- superset of, U+2283 ISOtech -->
495 <!-- note that nsup, 'not a superset of, U+2283' is not covered by the Symbol
496 font encoding and is not included. Should it be, for symmetry?
498 <!ENTITY nsub "⊄"> <!-- not a subset of, U+2284 ISOamsn -->
499 <!ENTITY sube "⊆"> <!-- subset of or equal to, U+2286 ISOtech -->
500 <!ENTITY supe "⊇"> <!-- superset of or equal to,
502 <!ENTITY oplus "⊕"> <!-- circled plus = direct sum,
504 <!ENTITY otimes "⊗"> <!-- circled times = vector product,
506 <!ENTITY perp "⊥"> <!-- up tack = orthogonal to = perpendicular,
508 <!ENTITY sdot "⋅"> <!-- dot operator, U+22C5 ISOamsb -->
509 <!-- dot operator is NOT the same character as U+00B7 middle dot -->
511 <!-- Miscellaneous Technical -->
512 <!ENTITY lceil "⌈"> <!-- left ceiling = apl upstile,
514 <!ENTITY rceil "⌉"> <!-- right ceiling, U+2309 ISOamsc -->
515 <!ENTITY lfloor "⌊"> <!-- left floor = apl downstile,
517 <!ENTITY rfloor "⌋"> <!-- right floor, U+230B ISOamsc -->
518 <!ENTITY lang "〈"> <!-- left-pointing angle bracket = bra,
520 <!-- lang is NOT the same character as U+003C 'less than'
521 or U+2039 'single left-pointing angle quotation mark' -->
522 <!ENTITY rang "〉"> <!-- right-pointing angle bracket = ket,
524 <!-- rang is NOT the same character as U+003E 'greater than'
525 or U+203A 'single right-pointing angle quotation mark' -->
527 <!-- Geometric Shapes -->
528 <!ENTITY loz "◊"> <!-- lozenge, U+25CA ISOpub -->
530 <!-- Miscellaneous Symbols -->
531 <!ENTITY spades "♠"> <!-- black spade suit, U+2660 ISOpub -->
532 <!-- black here seems to mean filled as opposed to hollow -->
533 <!ENTITY clubs "♣"> <!-- black club suit = shamrock,
535 <!ENTITY hearts "♥"> <!-- black heart suit = valentine,
537 <!ENTITY diams "♦"> <!-- black diamond suit, U+2666 ISOpub -->