descriptions of mac-control-modifier, mac-command-modifier, and
mac-option-modifier.
(Mac International): Fix description of conversion of clipboard data.
(Mac Font Specs): Add example of font customization by face attributes.
(Mac OS): Update feature support status.
(Mac Input): List supported input scripts. Remove description
about `mac-keyboard-text-encoding'. Mention mouse button
emulation and related variables.
(Mac International): Mention Central European and Cyrillic
support. Now `keyboard-coding-system' is dynamically changed.
Add description about coding system for selection. Add
description about language environment.
(Mac Environment Variables): Mention
`~/.MacOSX/environment.plist'. Give example of command line
arguments. Add Preferences support.
(Mac Directories): Explicitly state that this node is for Mac OS
Classic only.
(Mac Font Specs): Mention specification for scalable fonts. List
supported charsets. Add preferred way of creating fontsets. Add
description about `mac-allow-anti-aliasing'.
(Mac Functions): Add descriptions about `mac-set-file-creator',
`mac-get-file-creator', `mac-set-file-type', `mac-get-file-type',
and `mac-get-preference'.
