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

    Inserts or overstrikes a space at the current cursor position,
    depending on whether the current editing mode is insert or
    overstrike.

    If wrap mode is set, then line-oriented filling occurs.

    Format

      ENTER SPACE