FLD_SW_BAR
print_fld_str(FLD_SW_BAR, "No swap devices");
print_fld_bar(FLD_SW_BAR, 100 * used / xsize);
print_fld_bar(FLD_SW_BAR, 100 * used / avail);
FLD_SW_NAME, FLD_SW_BLOCKS, FLD_SW_USED, FLD_SW_BAR, NULL