fprintf(stderr, "%s", " -i, --invert swap black and white color\n");
fprintf(stderr, "%s", " -t, --notrans disable transparency in transparent terminal\n");
fprintf(stderr, "%s", " -s, --noslidenum do not show slide number at the bottom\n");
fprintf(stderr, "%s", " -i, --invert swap black and white color\n");
fprintf(stderr, "%s", " -t, --notrans disable transparency in transparent terminal\n");
fprintf(stderr, "%s", " -s, --noslidenum do not show slide number at the bottom\n");