<p style="font-size: 12px;color:#aaa;">版权引用：<a href="https://www.behance.net/gallery/50270247/Strokes-Shapes-Light"><span style="font-size: 12px;color:black;">“Broad nib- The broad nib is a calligraphy tool, that's rigid and has a flat edge. This characteristics give us stability while writing. When we change the pressure the amount of ink decreases or increases. Based on this variation in the strokes the paper model is created on different levels.”</span> </a>由 <a href="https://www.behance.net/TsvetislavaKoleva"><span style="font-size: 12px;color:black;">Tsvetislava Koleva</span></a> 授权许可 <span><a href="https://creativecommons.org/licenses/by-nc-nd/4.0/deed.zh" target="_blank" style="font-size: 12px;color:black;">Attribution-NoDerivs-NonCommercial 4.0 International<img src="" style="display: inline-block;height: 16px;width: auto;"></a></span></p>