Composing Newsletter in Text format & Signature placehol

Hello again.
When composing messages, I have a couple of questions:
1) there seems to be a placeholder available called [SIGNATURE], but I can't find where I need to configure the signature. Where do I find that?
2) I have set the subscribers to choose text or html. But in the compose messages section, all I see is the html editor to add the html message, but NO box for the text version of the newsletter.
Does this mean that the program automatically makes text versions for text subscribers? Or is there something missing that I am unaware of and/or haven't set correctly?
Thanks,
JJRose
When composing messages, I have a couple of questions:
1) there seems to be a placeholder available called [SIGNATURE], but I can't find where I need to configure the signature. Where do I find that?
2) I have set the subscribers to choose text or html. But in the compose messages section, all I see is the html editor to add the html message, but NO box for the text version of the newsletter.
Does this mean that the program automatically makes text versions for text subscribers? Or is there something missing that I am unaware of and/or haven't set correctly?
Thanks,
JJRose