1## 1.1 Document Structure
2
3### 1.1.1\. Requirements by Device Type
4
5[Section 2](#2_device_types) contains all of the requirements that apply to a
6specific device type. Each subsection of [Section 2](#2_device_types) is
7dedicated to a specific device type.
8
9All the other requirements, that universally apply to any Android device
10implementations, are listed in the sections after [Section 2](#2_device_types).
11These requirements are referenced as "Core Requirements" in this document.
12
13### 1.1.2\. Requirement ID
14
15Requirement ID is assigned for MUST requirements.
16
17*    The ID is assigned for MUST requirements only.
18*    STRONGLY RECOMMENDED requirements are marked as [SR] but ID is not assigned.
19*    The ID consists of : Device Type ID - Condition ID - Requirement ID
20     (e.g. C-0-1).
21
22Each ID is defined as below:
23
24*    Device Type ID (see more in [2. Device Types](#2_device_types))
25     *    C: Core (Requirements that are applied to any Android device implementations)
26     *    H: Android Handheld device
27     *    T: Android Television device
28     *    A: Android Automotive implementation
29     *    W: Android Watch implementation
30     *    Tab: Android Tablet implementation
31*    Condition ID
32     *    When the requirement is unconditional, this ID is set as 0.
33     *    When the requirement is conditional, 1 is assigned for the 1st
34          condition and the number increments by 1 within the same section and
35          the same device type.
36*    Requirement ID
37     *    This ID starts from 1 and increments by 1 within the same section and
38          the same condition.
39
40### 1.1.3\. Requirement ID in Section 2
41
42The Requirement ID in [Section 2](#2_device_types) starts with the corresponding
43section ID that is followed by the Requirement ID described above.
44
45*    The ID in [Section 2](#2_device_types) consists of :
46Section ID / Device Type ID - Condition ID - Requirement ID (e.g. 7.4.3/A-0-1).
47