Page History

Open Browser, Open Refocus.io extension 

Google Search Topic of Interest, in this case the  
"Epic of Gilgamesh"

Add a Link of Interest to the Progress List using 
Drag and Drop

Click on the Select Text button to go into Read Mode
after Selecting Text

In Read Mode we can expand or Collapse the 
Progress Pane by clicking on the panel with the arrow
 in the far right of the browser

Collapsed Progress Pane

Expanded Progress Pane

Image Modified