[R-es] Añadir encabezados a un archivo TXT

[Reverté Calvet, Gerard]

Se ha borrado un adjunto en formato HTML...
URL: <https://stat.ethz.ch/pipermail/r-help-es/attachments/20151217/702bafb9/attachment-0001.html>
------------ próxima parte ------------
A non-text attachment was scrubbed...
Name: image001.png
Type: application/octet-stream
Size: 148 bytes
Desc: no disponible
URL: <https://stat.ethz.ch/pipermail/r-help-es/attachments/20151217/702bafb9/attachment-0001.obj>