mirror of
https://git.lyx.org/repos/lyx.git
synced 2024-12-22 21:21:32 +00:00
525 lines
9.6 KiB
Plaintext
525 lines
9.6 KiB
Plaintext
#LyX 2.4 created this file. For more info see https://www.lyx.org/
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\lyxformat 598
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\begin_document
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\begin_header
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\begin_modules
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logicalmkup
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\language english
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\paperfontsize 12
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\spacing single
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\use_hyperref true
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\pdf_title "LyX's Development manual"
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\pdf_author "LyX Team"
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\pdf_subject "LyX's development documentation"
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\pdf_keywords "LyX, Documentation, Development"
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\use_package amssymb 1
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\use_package esint 1
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\notefontcolor #0000ff
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\index Index
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\shortcut idx
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\color #008000
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\end_index
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\end_header
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\begin_body
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\begin_layout Title
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Developing \SpecialChar LyX
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\end_layout
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\begin_layout Subtitle
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Version 2.3.x
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\end_layout
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\begin_layout Section
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File formats
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\end_layout
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\begin_layout Subsection
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When is an update of the .lyx file format number needed?
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\begin_inset CommandInset label
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LatexCommand label
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name "sec:When-is-an"
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\end_inset
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\end_layout
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\begin_layout Standard
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When you are working on a new feature you may ask yourself whether it needs
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an update of the .lyx file format number.
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Whether an update is needed or not is not always obvious.
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Rule of thumb:
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\end_layout
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\begin_layout Quote
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Whenever there is the danger that a previous version of LyX cannot open
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a file using the new feature, a file format update is needed.
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\end_layout
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\begin_layout Standard
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The file format change allows lyx2lyx rules to implement backwards compatibility.
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Below you can find a list of reasons for file format updates with explanations:
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\end_layout
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\begin_layout Description
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New
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\begin_inset space ~
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\end_inset
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document
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\begin_inset space ~
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\end_inset
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setting Whenever you introduce a new setting that is stored in the document
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header, a file format update is needed.
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\end_layout
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\begin_layout Description
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Removed
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\begin_inset space ~
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\end_inset
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document
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\begin_inset space ~
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\end_inset
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setting If a certain setting becomes obsolete and gets removed, a file format
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update is needed.
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\end_layout
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\begin_layout Description
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New
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\begin_inset space ~
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\end_inset
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valid
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\begin_inset space ~
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\end_inset
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value
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\begin_inset space ~
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\end_inset
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for
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\begin_inset space ~
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\end_inset
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an
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\begin_inset space ~
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\end_inset
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existing
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\begin_inset space ~
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\end_inset
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setting, e.
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\begin_inset space \thinspace{}
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\end_inset
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g.
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\end_layout
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\begin_deeper
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\begin_layout Description
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\paragraph_spacing single
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Automatically
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\begin_inset space ~
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\end_inset
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loaded
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\begin_inset space ~
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\end_inset
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math
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\begin_inset space ~
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\end_inset
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package The reason for this is that there is no true ERT inset for math
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formulas: Each command is parsed, and if a user happens to define a local
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command with the same name as a command that triggers an automatic load
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of a package, they need to be able to switch off the automatic loading
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of that package.
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This switch is stored by the
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\begin_inset Flex Code
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status collapsed
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\begin_layout Plain Layout
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use_package
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\end_layout
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\end_inset
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header setting.
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\end_layout
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\begin_layout Description
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New
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\begin_inset space ~
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\end_inset
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language that is stored in
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\begin_inset Flex Code
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status collapsed
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\begin_layout Plain Layout
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\backslash
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language
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\end_layout
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\end_inset
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.
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\begin_inset Note Note
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status collapsed
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\begin_layout Plain Layout
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This requirement is under discussion.
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\end_layout
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\end_inset
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\end_layout
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\end_deeper
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\begin_layout Description
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New
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\begin_inset space ~
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\end_inset
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inset Of course a new inset requires a file format update.
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\end_layout
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\begin_layout Description
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New
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\begin_inset space ~
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\end_inset
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style If a new style or inset layout is added to any layout file or module
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shipped with \SpecialChar LyX
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, then a new file format is needed in the master (development)
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branch.
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It is possible to backport new styles to the stable version without a file
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format change.
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\end_layout
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\begin_layout Description
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Removed
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\begin_inset space ~
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\end_inset
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style If a style or inset layout is removed in any layout file or module
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shipped with \SpecialChar LyX
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, a new file format is required.
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\end_layout
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\begin_layout Standard
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However,
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\series bold
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new
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\series default
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layouts and modules do
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\series bold
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not
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\series default
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require a file format update (changed 03/16).
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\end_layout
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\begin_layout Standard
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If you are still unsure, please ask on the development list.
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\end_layout
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\begin_layout Paragraph
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\begin_inset CommandInset label
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LatexCommand label
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name "par:export-test-output-formats"
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\end_inset
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Output formats
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\end_layout
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\begin_layout Standard
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The following output formats are currently tested for each sample document:
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\end_layout
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\begin_layout Labeling
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\labelwidthstring 00.00.0000
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LyX:
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\end_layout
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\begin_deeper
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\begin_layout Labeling
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\labelwidthstring 00.00.0000
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lyx16 LyX 1.6 file format (lyx2lyx)
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\end_layout
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\begin_layout Labeling
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\labelwidthstring 00.00.0000
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lyx21 LyX 2.1 file format (lyx2lyx)
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\end_layout
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\begin_layout Labeling
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\labelwidthstring 00.00.0000
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xhtml LyXHTML (native LyX HTML export)
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\end_layout
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\end_deeper
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\begin_layout Labeling
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\labelwidthstring 00.00.0000
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LyX
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\begin_inset space ~
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\end_inset
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+
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\begin_inset space ~
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\end_inset
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LaTeX:
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\end_layout
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\begin_deeper
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\begin_layout Labeling
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\labelwidthstring pdf5msystemFM
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dvi DVI (8-bit latex)
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\end_layout
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\begin_layout Labeling
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\labelwidthstring pdf5msystemFM
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dvi3_texF DVI (LuaTeX with 8-bit TeX fonts)
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\end_layout
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\begin_layout Labeling
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\labelwidthstring pdf5msystemFM
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dvi3_systemF DVI (LuaTeX with Unicode fonts)
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\end_layout
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\begin_layout Labeling
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\labelwidthstring pdf5msystemFM
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pdf2 PDF (pdflatex)
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\end_layout
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\begin_layout Labeling
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\labelwidthstring pdf5msystemFM
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pdf4_texF PDF (XeTeX with 8-bit TeX fonts)
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\end_layout
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\begin_layout Labeling
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\labelwidthstring pdf5msystemFM
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pdf4_systemF PDF (XeTeX with Unicode fonts)
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\end_layout
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\begin_layout Labeling
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\labelwidthstring pdf5msystemFM
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pdf5_texF PDF (LuaTeX with 8-bit TeX fonts)
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\end_layout
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\begin_layout Labeling
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\labelwidthstring pdf5msystemFM
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pdf5_systemF PDF (LuaTeX with Unicode fonts)
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\end_layout
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\end_deeper
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\begin_layout Labeling
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\labelwidthstring 00.00.0000
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LyX
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\begin_inset space ~
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\end_inset
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+
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\begin_inset space ~
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\end_inset
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LaTeX
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\begin_inset space ~
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\end_inset
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+
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\begin_inset space ~
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\end_inset
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postprocessing:
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\end_layout
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\begin_deeper
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\begin_layout Labeling
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\labelwidthstring pdf5msystemFM
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pdf DVI -> PS (dvips) -> PDF (ps2pdf)
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\end_layout
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\begin_layout Labeling
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\labelwidthstring pdf5msystemFM
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pdf3 DVI -> PDF (dvipdfm)
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\end_layout
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\end_deeper
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\begin_layout Labeling
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\labelwidthstring 00.00.0000
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not
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\begin_inset space ~
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\end_inset
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tested: (or only if set as default output format in the document source)
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\end_layout
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\begin_deeper
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\begin_layout Labeling
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\labelwidthstring pdf5msystemFM
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latex LaTeX (plain)
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\end_layout
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\begin_layout Labeling
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\labelwidthstring pdf5msystemFM
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luatex LaTeX (LuaTeX)
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\end_layout
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\begin_layout Labeling
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\labelwidthstring pdf5msystemFM
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dviluatex LaTeX (dviluatex)
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\end_layout
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\begin_layout Labeling
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\labelwidthstring pdf5msystemFM
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pdflatex LaTeX (pdflatex)
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\end_layout
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\begin_layout Labeling
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\labelwidthstring pdf5msystemFM
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platex LaTeX (pLaTeX)
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\begin_layout Labeling
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\labelwidthstring pdf5msystemFM
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xetex LaTeX (XeTeX)
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eps3 EPS (encapsulated Postscript) (cropped)
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\begin_layout Labeling
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\labelwidthstring pdf5msystemFM
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ps DVI -> Postscript (dvips)
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\end_layout
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\begin_layout Labeling
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\labelwidthstring pdf5msystemFM
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odf
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\end_layout
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\begin_layout Labeling
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\labelwidthstring pdf5msystemFM
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text (nor text2, ..., text4)
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textparagraph
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\begin_layout Labeling
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\labelwidthstring pdf5msystemFM
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word
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\begin_layout Labeling
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\labelwidthstring pdf5msystemFM
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word2
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wordhtml
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