Library /sys$common/syshlp/lse$clihelp.hlb SET, CURSOR, Parameter  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 motion-setting
    Specifies the cursor-motion setting. Motion-setting keywords and
    their effects are as follows:

 BOUND
    Restricts the cursor to positioning on a character, end-of-line,
    or end-of-buffer. This is the initial setting and is similar to
    cursor motion in the EDT editor.

 FREE
    Lets the cursor move anywhere in a window including past the end-
    of-line, past the end-of-buffer, in the middle of a tab, or to
    the left of the left margin. This is similar to the default cursor
    motion for the EVE editor.