[development] 404 handling

[Chris Johnson]

Moshe Weitzman wrote:
>> That 404s cause a full Drupal bootstrap, which can cause extra load in 
>> really heavy environments. Handling it at the Apache layer, as is 
>> being proposed, means it doesn't hit Drupal at all.
>>
>> It's probably, at least, a useful tip/snippet to be included somewhere.
> 
> oops ... yeah, documentation is probably all thats needed here.
> 

Since it's just one line, how about documenting by including it in the 
.htaccess file, commented out and preceded by a line documenting it?