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@@ -12200,7 +12200,8 @@ these are addressed in the language-specific documentation. However, the
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syntax used to specify arguments is the same across all languages. The
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syntax used to specify arguments is the same across all languages. The
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values passed to arguments can be literal values, values from org-mode tables
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values passed to arguments can be literal values, values from org-mode tables
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and literal example blocks, the results of other code blocks, or Emacs Lisp
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and literal example blocks, the results of other code blocks, or Emacs Lisp
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-code---see the ``Emacs Lisp evaluation of variables'' heading below.
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+code---see the ``Emacs Lisp evaluation of variables'' heading below. In
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+every case, variables require a default value when they are declared.
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These values can be indexed in a manner similar to arrays---see the
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These values can be indexed in a manner similar to arrays---see the
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``indexable variable values'' heading below.
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``indexable variable values'' heading below.
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Tom Dye