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3.5.2 Emacs documentation-property Command

• The commnand documentation-property

Function: documentation-property symbol property &optional verbatim ¶

This function returns the documentation string recorded in ‘SYMBOL’ ’s property list under property ‘PROPERTY’. It is most often used to look up the documentation strings of variables.

This differs from get in that it can refer to strings stored in the ‘etc/DOC’ file; and that it evaluates documentation properties that aren’t strings.

For function documentation, use the documentation function.

• In a function definition (a lambda or defun form), the documentation string is specified after the argument list, and is normally stored directly in the function object.
• You can also put function documentation in the function-documentation property of a function name.
• In a variable definition (a defvar form), the documentation string is specified after the initial value. The string is stored in the variable’s variable-documentation property.
• To save memory, the documentation for preloaded functions and variables (including primitives) is kept in a file named DOC, in the directory specified by doc-directory.

  "/Applications/MacPorts/Emacs.app/Contents/Resources/etc/DOC"