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