lipu
The prototypical lipu is a sheet of paper that records some information. As for physical properties, lipu refers to flat, bendable objects, like sheets of paper, leaves, and pancakes.
lipu mute a li tawa anpa tan kasi.
More abstractly, lipu also refers to documents that record information, like books, blog posts, and academic articles. It’s a common headnoun for websites, as in lipu Kemeka.
suno ale la mi lipu e pali mi.