translation.en: I had to draw every character by hand on quadrille graph paper -- there were four weights of Bell Centennial — pixel by pixel, then encode them raster line by raster line for the keyboard.
translation.zh: 我不得不在方格坐标图纸上 手工绘制每一个字符。 Bell Centennial字体有四种粗细。 先一个像素一个像素地绘制， 再用键盘对其逐行编码。