[Rd] Writing R Extensions manual?

[Spencer Graves]

Dear Hadley:  Thanks very much.  Clearly I looked at TFM but failed to 
properly parse it.  Thanks again.  Spencer Graves

hadley wickham wrote:
> It's very particular:
>
>> Malformed Depends or Suggests or Imports or Enhances field.
>> Offending entries:
>>   R (>=2.4.0)
>> Entries must be names of packages optionally followed by '<=' or '>=',
>> white space, and a valid version number in parentheses.
>   ^^^^^^^^^^^
>
> You need a space after >=
>
> Hadley