It is possible to split a text portlet into several text portlets e.g. to insert an image in the middle of the text, to create anchor links to different sections or just wishing to use different dot lists. Select where in the portlet you want the split and choose Edit -> Split portlet. All text below where you placed the cursor will be moved into a new text portlet.
The active text portlet is still open and will only contain the text that was located above the selection. The "new" text portlet, with the text below the splitting point, is placed right below the current portlet.
You can split a text portlet by using the quick key CTRL+Skift+S or by right clicking and selecting "Split portlet".