8.6.3 Delete Characters/Lines

• int delch()  
  int wdelch(win)  
  int mvdelch(y, x)  
  int mvwdelch(win, y, x)  
  Delete the character under the cursor and move the remaining characters to the right of the cursor one position to the left.

  y and x are the coordinates to which the cursor will be moved to before deleting.

• int deleteln()  
  int wdeleteln(win)  
  Delete the line under the cursor and move all other lines below one position up. Additionally, the bottom line of the window will be erased.