- PPM
- The Flipnote animation file containing metadata, a thumbnail, frames, sound and a final signature area. [1][2]
- TMB
- A compact Hatena preview containing the opening header, metadata and thumbnail portion of a PPM. [3]
- UGO
- A structured menu/document resource requested by the Flipnote Hatena client; it can contain text records and embedded preview assets. [4]
- FSID
- A sixteen-digit hexadecimal Flipnote Studio ID used as an identity label in the original ecosystem. It is not, on its own, an authentication secret. [5]
- ARM9 / ARM7
- The DSi processor modules whose original instructions are analysed in the ROM research. A virtual address must be paired with its build and module. [6]
- Confirmed / inferred
- Evidence labels used by the Flipnote Decompilation Project; see the method page. [6]
Terms used in these guides
- Frame index / frame count
- Many internal functions use a zero-based last-frame index. A PPM's ordinary count is that value plus one; mixing them produces off-by-one table lengths. [1]
- Metadata / thumbnail
- Metadata identifies and describes a Flipnote. The thumbnail is an image block. Both appear near the front of a PPM but have different layouts and validation needs. [2]
- FSID / filename
- A Flipnote Studio ID identifies a console-side creator; a filename encodes a different set of path components. The two should be checked separately when validating a file. [5]
- UGO / HTML
- UGO is an application menu archive. HTML is parsed into a document tree by a distinct browser path. A server may return both, but they are not interchangeable. [4][6]
- Confirmed / inferred / unknown
- These describe evidence strength, not importance. A plausible UI interpretation may remain inferred even when the branch bytes are confirmed. [6]