D2: Using MS LineDraw font in a RichEdit

Hi,
I need to use the MS LineDraw font (same as the old DOS Ascii characters -
anybody remember Turbo Pascal?) in a RichEdit component. Only trouble is
vertical lines drawn using Char(179) etc on successive lines do not join up -
there is a gap between the lines of text. Can anybody explain how to fix this?
Unfortunately I am fairly new to Delphi and can't make head nor tail of the
RichEdit source code!
Cheers,
John K

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