.pps is not a spreadsheet, it is a Microsoft powerpoint presentation and usually run in conjunction with Word. You may have to use OpenOffice or something similar to display it, as I am not sure if your version of Lotus will support the format.
The Evil Within 2 review-in-progress
Adobe shows still-in-development tools, including automatically colourising black-and-white photos
iPhone X news: Release date, price, new features & specs
Comment transformer un iPhone en borne Wi-Fi ?