This file is indexed.

/usr/share/lyx/latexfonts is in lyx-common 2.2.2-1.

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The actual contents of the file can be viewed below.

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##########################################################################
#
# LaTeX fonts natively supported by LyX.
#
# Syntax:
#
# Font <name>
#	GuiName            "<Gui Name>"
#	Family             <rm|sf|tt|math>
#	SwitchDefault      <0|1>
#	Package            <LaTeX package to be loaded>
#	Requires           <LaTeX package to test for>
#	AltFonts           <alternative fonts (comma-separated)>
#	OT1Font            <alternative font specifically for OT1 encoding>
#	CompleteFont       <alternative package for the complete family>
#	NoMathFont         <alternative font that does not change math>
#	PackageOptions     <general options to be passed to the package>
#	OsfOption          <option for oldstyle figure support>
#	OsfFont            <extra font for oldstyle figures>
#	OsfDefault         <0|1>
#	ScOption           <option for true smallcaps support>
#	OsfScOption        <option for combined osf and true smallcaps support>
#	ScaleOption        <option for font scaling>
#	Provides           <features provided by the font packages (comma-separated)>
#	Preamble
#	  <some arbitrary LaTeX code to be issued in the preamble>
#	EndPreamble
# EndFont
#
#
# NOTES:
#
# * Adding a new font results in a FILE FORMAT CHANGE. So if a new font
#   is added for the LyX distribution, the according changes need to be
#   done.
# * "SwitchDefault 1" makes the font to be loaded by switching the default
#   family to <name> (e.g., \renewcommand{\rmdefault}{cmr}), whereas
#   Package <package> loads it via \usepackage{package}. Only one of these
#   options is used per font (SwitchDefault takes precendende). Note that
#   SwitchDefault uses the font name.
# * In addition to normal fonts, you can also define alternative fonts
#   using the AltFont...EndFont tags. These alternative fonts will not
#   be added to the GUI, but LyX will fall back on them under specific
#   circumstances (e.g. if the main font is not available; see below).
# * If AltFonts are defined, LyX will try to load them in the defined
#   order if the main package is not available. So
#       Package          mathptmx
#       AltFonts         mathptm,times
#   will try to load mathptm if mathptmx is not available and then times
#   if mathptm is not available either.
#   AltFonts need to be defined separately using AltFont ... EndFont tags.
# * If Requires is set, LyX will check for this. If not, it will check
#   for Package and AltFonts.
# * OT1Font will load the defined font if the font encoding is OT1. This is
#   necessary since some newer font packages do not support this encoding.
#   The value "none" tells LyX not to load any font in OT1 encoding.
#   OT1Fonts need to be defined separately using AltFont ... EndFont tags.
# * The CompleteFont is loaded if the current font is selected as rm and
#   both sf and tt are set to "default" (this allows for instance to load
#   "bera" as opposed to "beraserif").
#   CompleteFonts need to be defined separately using AltFont ... EndFont
#   tags.
# * OsfFont is a font that is loaded additionally in and that provides
#   Old Style Figures for a given font (e.g. eco).
# * OsfScOption overrides any OsfOption and ScOption if both features
#   are selected.
# * Set OsfDefault to true for fonts which have Old Style Figures by
#   default and provide an option for lining figures. Pass this option
#   to OsfOption.
# * ScaleOption supports the placeholder $$val for the scale value.
# * The Preamble code is output immediately after the respective font
#   loading command.
#
##########################################################################


#
# ROMAN FONTS
#

Font ae
	GuiName          "AE (Almost European)"
	Family           rm
	Package          "ae,aecompl"
	OT1Font          none
	Requires         ae
EndFont

Font beraserif
	GuiName          "Bera Serif"
	Family           rm
	Package          beraserif
	CompleteFont     bera
	Requires         bera
EndFont

AltFont bera
	GuiName          "Bera Serif"
	Family           rm
	Package          bera
EndFont

Font bookman
	GuiName          "Bookman"
	Family           rm
	Package          bookman
EndFont

Font ccfonts
	GuiName          "Concrete Roman"
	Family           rm
	Package          ccfonts
EndFont

Font chancery
	GuiName          "Zapf Chancery"
	Family           rm
	Package          chancery
EndFont

Font charter
	GuiName          "Bitstream Charter (PSNFSS)"
	Family           rm
	Package          charter
EndFont

Font cmr
	GuiName          "Computer Modern Roman"
	Family           rm
	SwitchDefault    1
	OsfFont          eco
EndFont

AltFont eco
	Family           rm
	Package          eco
EndFont

Font garamondx
	GuiName          "URW Garamond"
	Family           rm
	OsfOption        osfI
	Package          garamondx
	Requires         garamondx-fonts
	AltFonts         ugm
EndFont

AltFont ugm
	GuiName          "URW Garamond"
	Family           rm
	SwitchDefault    1
	Requires         ugm
EndFont

Font libertine
	GuiName          "Libertine"
	Family           rm
	OsfOption        osf
	Package          libertine-type1
	AltFonts         libertine-2012,libertine-legacy
	Requires         libertineMono-type1
EndFont

AltFont libertine-2012
	GuiName          "Libertine"
	Family           rm
	OsfOption        lining
	OsfDefault       1
	Package          libertine-type1
EndFont

AltFont libertine-legacy
	GuiName          "Libertine"
	Family           rm
	OsfOption        osf
	Package          libertine
EndFont

Font lmodern
	GuiName          "Latin Modern Roman"
	Family           rm
	Package          lmodern
	NoMathFont       lmr
EndFont

AltFont lmr
	GuiName          "Latin Modern Roman"
	Family           rm
	SwitchDefault    1
	Requires         lmodern
EndFont

Font md-charter
	GuiName          "Bitstream Charter (Mathdesign)"
	Family           rm
	OsfOption        expert
	ScOption         expert
	OsfScOption      expert
	Package          mathdesign
	PackageOption    charter
	Requires         mdbch
	Provides         amssymb,amsfonts
	NoMathFont       mdbch
EndFont

AltFont mdbch
	GuiName          "Bitstream Charter (Mathdesign)"
	Family           rm
	SwitchDefault    1
	Requires         mdbch
EndFont

Font md-utopia
	GuiName          "Utopia (Mathdesign)"
	Family           rm
	OsfOption        expert
	ScOption         expert
	OsfScOption      expert
	Package          mathdesign
	PackageOption    utopia
	Requires         mdput
	Provides         amssymb,amsfonts
	NoMathFont       mdput
EndFont

AltFont mdput
	GuiName          "Utopia (Mathdesign)"
	Family           rm
	SwitchDefault    1
	Requires         mdput
EndFont

Font md-garamond
	GuiName          "URW Garamond (Mathdesign)"
	Family           rm
	OsfOption        expert
	ScOption         expert
	OsfScOption      expert
	Package          mathdesign
	PackageOption    garamond
	Requires         mdugm
	Provides         amssymb,amsfonts
	NoMathFont       mdugm
EndFont

AltFont mdugm
	GuiName          "URW Garamond (Mathdesign)"
	Family           rm
	SwitchDefault    1
	Requires         mdugm
EndFont

Font minionpro
	GuiName          "Minion Pro"
	Family           rm
	OsfOption        lf
	OsfDefault       1
	Package          MinionPro
	Provides         amssymb,amsfonts
	NoMathFont       minionpro-nomath
EndFont

AltFont minionpro-nomath
	GuiName          "Minion Pro"
	Family           rm
	OsfOption        lf
	OsfDefault       1
	Package          MinionPro
	PackageOption    onlytext
EndFont

Font newcent
	GuiName          "New Century Schoolbook"
	Family           rm
	Package          newcent
EndFont

Font palatino
	GuiName          "Palatino"
	Family           rm
	OsfOption        osf
	ScOption         sc
	OsfScOption      osf
	Package          mathpazo
	AltFonts         mathpple,palatino-sty
	NoMathFont       ppl
	Requires         psnfss
EndFont

AltFont mathpple
	GuiName          "Palatino"
	Family           rm
	Package          mathpple
	NoMathFont       ppl
EndFont

AltFont palatino-sty
	GuiName          "Palatino"
	Family           rm
	Package          palatino
EndFont

AltFont ppl
	GuiName          "Palatino"
	Family           rm
	OsfFont          pplj
	SwitchDefault    1
EndFont

AltFont pplj
	GuiName          "Palatino"
	Family           rm
	SwitchDefault    1
EndFont

Font times
	GuiName          "Times Roman"
	Family           rm
	Package          mathptmx
	AltFonts         mathptm,times-sty
	NoMathFont       ptm
	Requires         psnfss
EndFont

AltFont mathptm
	GuiName          "Times Roman"
	Family           rm
	Package          mathptm
	NoMathFont       ptm
EndFont

AltFont times-sty
	GuiName          "Times Roman"
	Family           rm
	Package          times
EndFont

AltFont ptm
	GuiName          "Times Roman"
	Family           rm
	SwitchDefault    1
EndFont

Font tgbonum
	GuiName          "TeX Gyre Bonum"
	Family           rm
	Package          tgbonum
EndFont

Font tgchorus
	GuiName          "TeX Gyre Chorus"
	Family           rm
	Package          tgchorus
EndFont

Font tgpagella
	GuiName          "TeX Gyre Pagella"
	Family           rm
	Package          tgpagella
EndFont

Font tgschola
	GuiName          "TeX Gyre Schola"
	Family           rm
	Package          tgschola
EndFont

Font tgtermes
	GuiName          "TeX Gyre Termes"
	Family           rm
	Package          tgtermes
EndFont

# fourier supersedes utopia.sty, but does
# not work with OT1 encoding.
Font utopia
	GuiName          "Utopia (Fourier)"
	Family           rm
	OsfOption        oldstyle
	ScOption         expert
	Package          fourier
	AltFonts         utopia-sty
	OT1Font          utopia-sty
	NoMathFont       futs
EndFont

AltFont utopia-sty
	GuiName          "Utopia (Fourier)"
	Family           rm
	Package          utopia
EndFont

AltFont futs
	GuiName          "Utopia (Fourier)"
	Family           rm
	SwitchDefault    1
	OsfFont          futj
EndFont

AltFont futj
	GuiName          "Utopia (Fourier)"
	Family           rm
	SwitchDefault    1
EndFont


#
# SANS SERIF FONTS
#

Font avant
	GuiName          "Avant Garde"
	Family           sf
	Package          avant
EndFont

Font berasans
	GuiName          "Bera Sans"
	Family           sf
	ScaleOption      scaled=$$val
	Package          berasans
	Requires         bera
EndFont

Font biolinum
	GuiName          "Biolinum"
	Family           sf
	OsfOption        osf
	ScaleOption      scaled=$$val
	Package          biolinum-type1
	Requires         libertineMono-type1
	AltFonts         biolinum-2012
EndFont

AltFont biolinum-2012
	GuiName          "Biolinum"
	Family           sf
	OsfOption        lining
	OsfDefault       1
	Package          biolinum-type1
EndFont

Font cmbr
	GuiName          "CM Bright"
	Family           sf
	SwitchDefault    1
	Requires         cmbright
EndFont

Font cmss
	GuiName          "Computer Modern Sans"
	Family           sf
	SwitchDefault    1
EndFont

Font helvet
	GuiName          "Helvetica"
	Family           sf
	ScaleOption      scaled=$$val
	Package          helvet
	Requires         psnfss
EndFont

Font iwona
	GuiName         "Iwona"
	Family          sf
	Requires        iwona
	SwitchDefault   1
EndFont

Font iwonal
	GuiName         "Iwona (Light)"
	Family          sf
	Requires        iwona
	SwitchDefault   1
EndFont

Font iwonac
	GuiName         "Iwona (Condensed)"
	Family          sf
	Requires        iwona
	SwitchDefault   1
EndFont

Font iwonalc
	GuiName         "Iwona (Light Condensed)"
	Family          sf
	Requires        iwona
	SwitchDefault   1
EndFont

Font kurier
	GuiName         "Kurier"
	Family          sf
	Requires        kurier
	SwitchDefault   1
EndFont

Font kurierl
	GuiName         "Kurier (Light)"
	Family          sf
	Requires        kurier
	SwitchDefault   1
EndFont

Font kurierc
	GuiName         "Kurier (Condensed)"
	Family          sf
	Requires        kurier
	SwitchDefault   1
EndFont

Font kurierlc
	GuiName         "Kurier (Light Condensed)"
	Family          sf
	Requires        kurier
	SwitchDefault   1
EndFont

Font lmss
	GuiName          "Latin Modern Sans"
	Family           sf
	SwitchDefault    1
	Requires         lmodern
EndFont

Font tgadventor
	GuiName          "TeX Gyre Adventor"
	Family           sf
	Package          tgadventor
EndFont

Font tgheros
	GuiName          "TeX Gyre Heros"
	Family           sf
	Package          tgheros
EndFont

Font uop
	GuiName          "URW Classico (Optima)"
	Family           sf
	SwitchDefault    1
	Requires         urwclassico
EndFont


#
# MONOSPACED FONTS
#

Font beramono
	GuiName          "Bera Mono"
	Family           tt
	ScaleOption      scaled=$$val
	Package          beramono
	Requires         bera
EndFont

Font cmtl
	GuiName          "CM Typewriter Light"
	Family           tt
	SwitchDefault    1
	Requires         cmbright
EndFont

Font cmtt
	GuiName          "Computer Modern Typewriter"
	Family           tt
	SwitchDefault    1
EndFont

Font courier
	GuiName          "Courier"
	Family           tt
	Package          courier
	Requires         psnfss
EndFont

Font libertine-mono
	GuiName          "Libertine Mono"
	Family           tt
	ScaleOption      scaled=$$val
	Package          libertineMono-type1
EndFont

Font lmtt
	GuiName          "Latin Modern Typewriter"
	Family           tt
	SwitchDefault    1
	Requires         lmodern
EndFont

Font luximono
	GuiName          "LuxiMono"
	Family           tt
	ScaleOption      scaled=$$val
	Package          luximono
EndFont

Font tgcursor
	GuiName          "TeX Gyre Cursor"
	Family           tt
	Package          tgcursor
EndFont

Font txtt
	GuiName          "TX Typewriter"
	Family           tt
	SwitchDefault    1
	Requires         txfonts
EndFont


#
# MATH FONTS
#

Font eulervm
	GuiName          "Euler VM"
	Family           math
	Package          eulervm
EndFont

Font garamondx-ntxm
	GuiName          "URW Garamond (New TX)"
	Family           math
	Package          newtxmath
	PackageOption    garamondx
	Provides         amssymb,amsfonts
EndFont

Font iwona-math
	GuiName         "Iwona (Math)"
	Family          math
	Requires        iwona
	Preamble
	% store roman font
	\let\origrmdefault\rmdefault
	\usepackage[math]{iwona}
	% reset stored roman font
	\renewcommand{\rmdefault}{\origrmdefault}
	EndPreamble
EndFont

Font kurier-math
	GuiName         "Kurier (Math)"
	Family          math
	Requires        kurier
	Preamble
	% store roman font
	\let\origrmdefault\rmdefault
	\usepackage[math]{kurier}
	% reset stored roman font
	\renewcommand{\rmdefault}{\origrmdefault}
	EndPreamble
EndFont

Font libertine-ntxm
	GuiName          "Libertine (New TX)"
	Family           math
	Package          newtxmath
	PackageOption    libertine
	Provides         amssymb,amsfonts
EndFont

Font minion-ntxm
	GuiName          "Minion Pro (New TX)"
	Family           math
	Package          newtxmath
	PackageOption    minion
	Requires         minion2newtx
	Provides         amssymb,amsfonts
EndFont

Font newtxmath
	GuiName          "Times Roman (New TX)"
	Family           math
	Package          newtxmath
	Provides         amssymb,amsfonts
EndFont