# Using This Manual

Important terms and symbols used in this manual are defined below.

1. Terms

   The term "user" in this manual refers to the software developer, not to the general consumer.

   Bit lengths in this manual are expressed as follows.

   Bit Length | Term Used
   8 bits | byte
   16 bits | half-word
   32 bits | word

2. Symbols

   The attributes of bits used in bit operations are represented as follows.

3. Abbreviations

   The following abbreviations are used to denote Nintendo handheld systems.

   - DMG (Game Boy)
   - CGB (Game Boy Color)
   - AGB (Game Boy Advance)