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@@ -44,9 +44,6 @@
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;; Moreover, headlines now fall into three categories: sectioning
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;; elements, frames and blocks.
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;;
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-;; - Like `latex' back-end sectioning elements are still set through
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-;; `org-latex-classes' variable.
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-;;
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;; - Headlines become frames when their level is equal to
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;; `org-beamer-frame-level' (or "H" value in the OPTIONS line).
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;; Though, if an headline in the current tree has a "BEAMER_env"
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@@ -68,18 +65,31 @@
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;; a "BEAMER_ref" property is mandatory in order to refer to the
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;; frame being resumed, and contents are ignored.
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;;
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-;; Also, an headline with an "ignoreheading" value will have its
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-;; contents only inserted in the output. This special value is
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+;; Also, an headline with an "ignoreheading" environment will have
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+;; its contents only inserted in the output. This special value is
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;; useful to have data between frames, or to properly close
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;; a "column" environment.
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;;
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-;; Along with "BEAMER_env", headlines also support "BEAMER_act" and
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-;; "BEAMER_opt" properties. The former is translated as an
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+;; Along with "BEAMER_env", headlines also support the "BEAMER_act"
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+;; and "BEAMER_opt" properties. The former is translated as an
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;; overlay/action specification (or a default overlay specification
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;; when enclosed within square brackets) whereas the latter specifies
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;; options for the current frame ("fragile" option is added
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;; automatically, though).
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;;
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+;; Moreover, headlines handle the "BEAMER_col" property. Its value
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+;; should be a decimal number representing the width of the column as
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+;; a fraction of the total text width. If the headline has no
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+;; specific environment, its title will be ignored and its contents
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+;; will fill the column created. Otherwise, the block will fill the
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+;; whole column and the title will be preserved. Two contiguous
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+;; headlines with a non-nil "BEAMER_col" value share the same
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+;; "columns" LaTeX environment. It will end before the next headline
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+;; without such a property. This environment is generated
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+;; automatically. Although, it can also be explicitly created, with
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+;; a special "columns" value for "BEAMER_env" property (if it needs to
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+;; be set up with some specific options, for example).
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+;;
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;; Every plain list has support for `:environment', `:overlay' and
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;; `:options' attributes (through ATTR_BEAMER affiliated keyword).
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;; The first one allows to use a different environment, the second
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Nicolas Goaziou