"SfR Fresh" - the SfR Freeware/Shareware Archive 
Member "vim72/runtime/ftplugin/README.txt" of archive vim-7.2.tar.gz:
As a special service "SfR Fresh" has tried to format the requested source page into HTML format using source code syntax highlighting with prefixed line numbers.
Alternatively you can here view or download the uninterpreted source code file.
That can be also achieved for any archive member file by clicking within an archive contents listing on the first character of the file(path) respectively on the according byte size field.
1 The ftplugin directory is for Vim plugin scripts that are only used for a
2 specific filetype.
3
4 All files ending in .vim in this directory and subdirectories will be sourced
5 by Vim when it detects the filetype that matches the name of the file or
6 subdirectory.
7 For example, these are all loaded for the "c" filetype:
8
9 c.vim
10 c_extra.vim
11 c/settings.vim
12
13 Note that the "_" in "c_extra.vim" is required to separate the filetype name
14 from the following arbitrary name.
15
16 The filetype plugins are only loaded when the ":filetype plugin" command has
17 been used.
18
19 The default filetype plugin files contain settings that 95% of the users will
20 want to use. They do not contain personal preferences, like the value of
21 'shiftwidth'.
22
23 If you want to do additional settings, or overrule the default filetype
24 plugin, you can create your own plugin file. See ":help ftplugin" in Vim.