The .ENABLE OVERSTRIKING and .DISABLE OVERSTRIKING commands
    enable and disable the overstrike function.

    You use the Overstrike flag (%) to create special characters that
    are not available on the terminal by overstriking any printing
    character with another. For example, you can overstrike a 7 with
    a hyphen to create a European 7.

    Formats

      .ENABLE OVERSTRIKING

      .DISABLE OVERSTRIKING

    Abreviated formats

      .EOV

      .DOV