#unicode characters to display synth (all bold lines)
vline = '\u2503'
hline = '\u2501'
tlcorner = '\u250F'
trcorner = '\u2513'
blcorner = '\u2517'
brcorner = '\u251B'
toptree = '\u2533'
bottree = '\u253B'
block = '\u2588'
