Broadly speaking, "notes" can be classified into "in-text-note" and "off-text-note".

从广义上说，“注释”可以分为“篇章内注释”和“篇章外注释”。

youdao

Note that you can enter text using the on screen keyboard in the emulator, or with your standard keyboard.

注意，你可以通过你的标准键盘，或者是使用模拟器中的屏幕键盘录入文本。

youdao

Make a brief note in the margin about what you feel or about what in the text created the challenge.

在页边写一个简短的笔记说出你的感觉或是指出文中的什么内容引发了冲突。

youdao

Indeed, I made a reminder note to myself on a Post-it Note stuck to a page in the iNotebook, and its text was saved in the iPad app.

WSJ: Pen and Paper Find a Place in the Digital World

The Irex also lacks a Home button, a note-taking function, any way to highlight text and a built-in dictionary.

WSJ: A Review of the Irex E-reader