This directive enables or disables the spelling module. When enabled, keep in mind that

• the directory scan which is necessary for the spelling correction will have an impact on the server’s performance when many spelling corrections have to be performed at the same time.
• the document trees should not contain sensitive files which could be matched inadvertently by a spelling “correction”.
• the module is unable to correct misspelled user names (as in http://my.host/~apahce/), just file names or directory names.
• spelling corrections apply strictly to existing files, so a request for the <Location /status> may get incorrectly treated as the negotiated file “/stats.html”.

mod_speling should not be enabled in DAV enabled directories, because it will try to “spell fix” newly created resource names against existing filenames, e.g., when trying to upload a new document doc43.html it might redirect to an existing document doc34.html, which is not what was intended.