ERASE START OF LINE
  Erases the current line, starting with the character left of the cursor
  until the start of the line. If you are already at the start of a line,
  nothing is erased.
  Key:   EVE defines CTRL/U as ERASE START OF LINE.
  Steps:
     1.  Put the cursor to the right of the text you want to erase.
     2.  Use the ERASE START OF LINE command.
  Usage notes:
  o  At the end of a line (carriage return), ERASE START OF LINE erases the
     text on the line, leaving the cursor at the start of a blank line.
  o  To insert what you erased, use the RESTORE LINE command.
  o  You can also use CTRL/U (or other key defined as ERASE START OF LINE)
     to discard a command you recalled. See help on Editing Command Lines.
  o  Setting the EDT keypad redefines CTRL/U as Delete Start Line, which is
     slightly different from the EVE definition.
  Related topics:
     ERASE LINE    ERASE PREVIOUS WORD    RESTORE    RESTORE LINE