rtfText {\rtf0\ansi{\fonttbl\f0\fswiss Helvetica;}\margl40\margr40\pard\tx960\tx1920\tx2880\tx3840\tx4800\tx5760\tx6720\tx7680\tx8640\tx9600\f0\b0\i0\ul0\fs24 alt-[ in Symbol font is an overbar that appears over next letter typed}
rtfText {\rtf0\ansi{\fonttbl\f0\fswiss Helvetica;}\margl40\margr40\pard\tx960\tx1920\tx2880\tx3840\tx4800\tx5760\tx6720\tx7680\tx8640\tx9600\f0\b0\i0\ul0\fs24 Use symbol font for Greek and other characters - look at keyboard panel in Preferences application}