When I've made changes to files in a project, they appear under the "Unstaged files" heading on the "File status" screen.  Each file appears with a checkbox, status icon, name, and an ellipsis button.  Clicking on the ellipsis button reveals a menu of several items, including "Discard File" and "Remove File".  They appear to mean the same thing, to delete the file from the filesystem, but actually they mean to discard the changes made to the file and delete the file, respectively.

Adding to the confusion, if I open the contextual menu for one of the unstaged files, I get a menu with several options, including "Reset…"  As it turns out, that option does the same thing as the "Discard File" option from the ellipsis menu.

Suggestion: Change both menu options to use the same text.  It should be either "Reset File…" or simply "Reset…", but either way the option should include an ellipsis in its name to indicate that a dialog box will appear when the option is selected, it won't be executed immediately without question.