AnkiDroid is intended to be used in conjunction with Anki on your computer. While it is possible to function without it, some tasks are either only possible with, or a lot more efficient with Anki Desktop. Furthermore, it is strongly recommended to at least read "Key Concepts" section of the main Anki manual to understand the terminology used here.
AnkiDroid: Anki flashcards on Android. Your secret trick to achieve superhuman information retention. - ankidroid/Anki-Android
AnkiDroid App Anki is a program which makes remembering things easy. Because it is a lot more efficient than traditional study methods, you can either greatly decrease your
AnkiDroid: Flashcards Memorize anything with AnkiDroid! AnkiDroid lets you learn flashcards very efficiently by showing them just before you will forget. It is fully compatible with the spaced repetition software Anki (including synchronization), which is available for Windows, Linux and macOS. Study all sorts of things wherever and whenever ...
AnkiDroid: Flashcards | F-Droid - Free and Open Source Android App ...
Check "The folder metaphor" section at Wikipedia. It states: There is a difference between a directory, which is a file system concept, and the graphical user interface metaphor that is used to represent it (a folder). For example, Microsoft Windows uses the concept of special folders to help present the contents of the computer to the user in a fairly consistent way that frees the user from ...
Every directory on a Unix system (and probably every other system too) contains at least two directory entries. These are . (current directory) and .. (parent directory). In the case of the root directory, these point to the same place, but with any other directory, they are different. You can see this for yourself using the stat, pwd and cd commands (on Linux): $ cd / $ stat . .. bin sbin ...