What are these icons?
Many tools in SketchUp for iPad have optional tool modes. Optional tool modes modify the way you use a tool. If a tool has optional tool modes, you'll see an icon for each available mode. For example, the Lasso tool has three optional modes - Add, Remove, and Inverse. Want to learn more skills? Check out our SketchUp community forums: https://forums.sketchup.com , more videos on our YouTube channel: https://www.youtube.com/SketchUp , or SketchUp Campus: https://learn.sketchup.com Want to use SketchUp? View our different plans: https://www.sketchup.com/plans-and-pricing Read our blog for more learning content as well as industry insights from architects, interior designers, urban planners, and more: https://blog.sketchup.com Follow us on Twitter https://twitter.com/sketchup , Instagram https://www.instagram.com/sketchup_official , Facebook https://www.facebook.com/sketchup , and LinkedIn https://www.linkedin.com/company/sketchup to stay up to date on our newest features and releases.