Using Impess v.188.8.131.52 and can’t figure out how to add a shadow to text. The “Help” is pretty much no help. It says, "Open context menu - choose Style - Shadow. What context menu? I’m not seeing a menu for style.
Found it. In the character “Properties” area, there is a button for “More Options.” Click that button and a window opens with additional options. There are three tabs, one of which is for font effects. You can add shadow to your text in that area.