MODE 0：INIT

初始化，即刷完后变成全白色。

“初始化（INIT）模式用于完全擦除显示屏并使其保持白色状态。它是适用于存储器中的显示信息不是光学元件的不确定状态的情况显示刷新，例如，设备完全断电后收到电源后的状态。这波形会多次切换显示器，并使其处于白色状态。”

MODE 1：DU

direct update

“直接更新（DU）是一种非常快速、不闪的更新。此模式支持从任何灰度转换为黑阶或白阶。它不能用于更新为除黑色或白色之外的任何灰色。此模式的更新时间很快，可用于响应触摸传感器、笔输入或菜单选择。”

MODE 2：GC16

grayscale clearing

“灰度清除（GC16）模式用于更新完整显示并提供高图像质量。当GC16与全显示更新一起使用时，整个显示将随着新图像的写入而更新。如果使用“部分更新”命令时，只有灰度值发生变化的像素才会更新。GC16模式有16个单独的灰度级别。”

MODE 3：GL16

“GL16波形主要用于更新白色背景上的稀疏内容，例如抗锯齿文字，减少闪光。GL16波形有16个独特的灰度级。”

A2

“A2模式是一种快速、非闪动更新模式，可用在快速翻页或简单的黑/白模式动画。此模式仅支持从和到黑色或白色的转换（意思是只能黑到白或者白到黑）。它不能用于更新到除黑色或白色以外的任何灰色。建议将更新顺序转换为重复的A2更新如图1所示。在从4位图像到1位图像的转换中使用白色图像将减少重影并提高A2更新的图像质量。”

用得多的是GC16，DU，A2，还有一些其他的模式没翻译，可以参考。

GLR16

The GLR16 mode is used in conjunction with an image preprocessing algorithm to update sparse content on a white background with reduced flash and reduced image artifacts. The GLR16 mode supports 16 graytones. If only the even pixel states are used (0, 2, 4, … 30), the mode will behave exactly as a traditional GL16 waveform mode. If a separately-supplied image preprocessing algorithm is used, the transitions invoked by the pixel states 29 and 31 are used to improve display quality. For the AF waveform, it is assured that the GLR16 waveform data will point to the same voltage lists as the GL16 data and does not need to be stored in a separate memory.

GLD16

The GLD16 mode is used in conjunction with an image preprocessing algorithm to update sparse content on a white background with reduced flash and reduced image artifacts. It is recommended to be used only with the full display update. The GLD16 mode supports 16 graytones. If only the even pixel states are used (0, 2, 4, … 30), the mode will behave exactly as a traditional GL16 waveform mode. If a separately-supplied image preprocessing algorithm is used, the transitions invoked by the pixel states 29 and 31 are used to refresh the background with a lighter flash compared to GC16 mode following a predetermined pixel map as encoded in the waveform file, and reduce image artifacts even more compared to the GLR16 mode. For the AF waveform, it is assured that the GLD16 waveform data will point to the same voltage lists as the GL16 data and does not need to be stored in a separate memory.

DU4

The DU4 is a fast update time (similar to DU), non-flashy waveform. This mode supports transitions from any gray tone to gray tones 1,6,11,16 represented by pixel states [0 10 20 30]. The combination of fast update time and four gray tones make it useful for anti-aliased text in menus. There is a moderate increase in ghosting compared with GC16.

（根据元太文档：e-paper-mode-declaration翻译和自己的理解）

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