{feed.raw.author}
{f:format.date(format: '%d.%m.%Y', date: '{feed.Raw.dateTime}')}
To get {feed.raw.body}, you will have html p-tags wrapped done by tx_news extension in database. To get rid of <p> crypto
you will make use of -> f:format.raw() -> f:format.stripTags().
To crop to maximum characters of 100 you use -> f:format.crop(maxCharacters: 100)
{feed.Text}
{feed.raw.body -> f:format.raw() -> f:format.stripTags() -> f:format.crop(maxCharacters: settings.txnewsCropBodytextTeaser)}