Adjust the size of the text
The size of the text is specified by the content package you are using. Because it might not be ideal for your eyes and comfort, you can either increase or decrease the text size of the pages at any time. To do so, use the Magnify icon to increase and the Reduce icon to decrease the size of the text. Those commands are also available in Display > Zoom on the menu bar and one more option named Original size is there which reset the text size of the page to its original size. You can also use the keyboard shortcuts Ctrl and + (⌘ and + on Mac) to zoom in, Ctrl and - (⌘ and - on Mac) to zoom out and Ctrl and 0 (⌘ and 0 on Mac) to reset the zoom level.