[TYPO3-ttnews] Add More Link when String is found

[undkonsorten]

Thanks for your effort, but my question isn't really answered.
No, I didn't mean the more-mark in the templates.
I want add the possibility to add a Marker (call it Crop-Marker) inside 
the bodytext.
It would be possible through a simple crop, but then the the text is 
cropped after a certain amount of characters, not at a certain marker 
set by an author.
Well did somebody understand what i want?
Any more hints?