Leading or trailing white space characters in file names

[Travis Cobbs]

I think the new white space section should be modified to add one more sentence on the end, like so:

White space

Command parameters for every line type must be separated by white space. The white space characters used to separate these parameters may be either space or tab. Both should be treated the same, and any number of contiguous white space characters (1 or more) are allowed. Any number of white space characters may also precede the line type.

The reason for my suggestion is that without it, the legality of preceding white space characters is somewhat ambiguous. Everything else you had looks good to me.