Remove stroke or fill from your Adobe InDesign object…
If you have an InDesign object such as a text box, or an image frame in your document and you wish to remove any stroke and fill it currently has, you can do it with a quick keystroke. Simply select the object in question and hit the Slash key ( / ). This will set either the fill or stroke to None, depending on which you have active at the time. To remove the color from the other attribute, just hit the X key to switch and hit the slash key again.