求翻译：密写：即利用某些有机化合物或无机化合物对纸张的潜隐性能，在纸上写出眼睛看不见的文字，再通过一定的光、热、蒸气和化学的作用显示出字迹来的一种秘密的通信方法。是什么意思？

Steganography: namely, the use of certain organic compounds and inorganic compounds to the latent performance of paper, in the writes eyes invisible text on paper, then through some light, heat, steam and chemical effects of handwriting to show a method for secret communication.