Here’s a visible example:

This is the raw input. In the first window we have right-to-left text orientation and on the second lower one left-to-right text orientation with the same raw text input.

line 1 = Memory scanning finished (68.4s).
line 2 = .(Memory scanning finished (68.4s
line 3 = Memory scannig finished (68.4). endOfLineText
line 4 = .(Memory scanning finished (68.4s endOfLineText

http://t2.technion.ac.il/~seyy/text.orientation.gif