Let

.let {.multiply {4} {2}}
    area:
    The area of the rectangle is .area.
    If it were a triangle, it would have been .divide {.area} by:{2}.

.center
    .let {Quarkdown}
        name:
        .uppercase {.name}, .lowercase {.name}, .capitalize {.name}

.center
    .let {Quarkdown}
        .uppercase {.1}, .lowercase {.1}, .capitalize {.1}