The segmentation engine can be viewed as the core of any CAT tool. It segments the text and determines what portions you have to translate.
In MetaTexis, you have full control over the segmentation process. You can set many parameters to tune the segmentation engine in accordance with the special features of the current document.
And there is more: At any time, you can change the result created by the segmentation engine. If you think that the current segment should be different, you can use the segment manipulation functions.