Deletes the line the text cursor is currently on. If the cursor is on the first line of a folded block of lines then all the lines folded underneath the current line are also deleted.
If you use the menu item or toolbar button to invoke this command then it is invoked on EditPad’s main editor, where you edit files. If you press the shortcut key on the keyboard, it is invoked on whichever editor is showing the text cursor (vertical blinking bar), whether that’s the main editor, the search box, or the replace box.