ACS_VLINE
nsym = ACS_VLINE;
ACS_VLINE = 'x' | __ACS_IS_WACS;
ACS_VLINE = '|';
left |= ACS_VLINE;
right |= ACS_VLINE;
#define ACS_SBSB ACS_VLINE
ch |= ACS_VLINE;