Tag is identified by the tag id and the tag parameters. Size of the parameters is determined by the tag id, and can be fixed or variable. Tag id is a word (2 bytes), high-order byte of which must be F5. Example:
00 F5 32 00 00 00 02 00
Tag id: F500 (param size: 6)
Parameter 1: 0x00000032 (object id)
Parameter 2: 0x0002 (object type, 2=Page)
Here's the table of all known tags. i in 'Params' colums denotes invalid tag, v denotes a tag with variable number of parameters.
Tag names with an asterisk are tentative.
| Tag ID | Params (bytes) | Proposed name |
| F500 | 6 | *Object Start? |
| F501? | 0 | *Object End? |
| F502? | 4 | *Object Info Link? |
| F503? | 4 | *Link |
| F504? | 4 | *Stream Size? |
| F505? | 0 | *Stream Start? |
| F506? | 0 | *Stream End? |
| F507? | 4 | *Contained Objects List? |
| F508? | 4 | |
| F509? | 4 | |
| F50A? | 4 | |
| F50B? | v | |
| F50C | i | |
| F50D? | v | |
| F50E? | 2 | |
| F50F | i | |
| F510 | i | |
| F511? | 2 | Font Size? |
| F512? | 2 | Font Width? |
| F513? | 2 | Font Escapement? |
| F514? | 2 | Font Orientation? |
| F515? | 2 | Font Weight? |
| F516? | v | Font Facename? |
| F517? | 4 | Text Color? |
| F518? | 4 | Text Bg Color? |
| F519? | 2 | Word Space? |
| F51A? | 2 | Letter Space? |
| F51B? | 2 | Base Line Skip? |
| F51C? | 2 | Line Space? |
| F51D? | 2 | Par Indent? |
| F51E? | 2 | Par Skip? |
| F51F | i | |
| F520 | i | |
| F521? | 2 | |
| F522? | 2 | |
| F523? | 2 | |
| F524? | 2 | |
| F525? | 2 | *Page Height? |
| F526? | 2 | *Page Width? |
| F527? | 2 | |
| F528? | 2 | |
| F529? | 6 | |
| F52A? | 2 | |
| F52B? | 2 | |
| F52C? | 2 | |
| F52D? | 4 | |
| F52E? | 2 | |
| F52F | i | |
| F530 | i | |
| F531? | 2 | Block Width? |
| F532? | 2 | Block Height? |
| F533? | 2 | Block Rule? |
| F534? | 4 | |
| F535? | 2 | |
| F536? | 2 | |
| F537? | 4 | |
| F538? | 2 | |
| F539? | 2 | |
| F53A? | 2 | |
| F53B | i | |
| F53C? | 2 | |
| F53D? | 2 | |
| F53E? | 2 | |
| F53F | i | |
| F540 | i | |
| F541? | 2 | *Mini Page Height? |
| F542? | 2 | *Mini Page Width? |
| F543 | i | |
| F544? | 4 | |
| F545? | 4 | |
| F546? | 2 | *Location Y? |
| F547? | 2 | *Location X? |
| F548? | 2 | |
| F549? | 8 | *Put Sound? |
| F54A? | 8 | *Image Rect? |
| F54B? | 4 | *Image Size? |
| F54C? | 4 | *Image Stream? |
| F54D? | 0 | |
| F54E? | 12 | |
| F54F | i | |
| F550 | i | |
| F551? | 2 | *Canvas Width? |
| F552? | 2 | *Canvas Height? |
| F553? | 4 | |
| F554? | 2 | *Stream Flags? |
| F555? | v | |
| F556? | v | |
| F557? | 2 | |
| F558? | 2 | |
| F559? | v | *Font File Name? |
| F55A? | v | |
| F55B? | 4 | View Point? |
| F55C? | v | *Page List? |
| F55D? | v | *Font Face Name? |
| F55E? | 2 | |
| F55F | i | |
| F560 | i | |
| F561? | 2 | |
| F562? | 0 | |
| F563? | 0 | |
| F564? | 0 | |
| F565? | 0 | |
| F566? | 0 | |
| F567? | 0 | |
| F568? | 0 | |
| F569? | 0 | |
| F56A? | 0 | |
| F56B? | 0 | |
| F56C? | 8 | *Jump To? |
| F56D? | v | |
| F56E? | 0 | |
| F56F | i | |
| F570 | i | |
| F571? | 0 | |
| F572? | 0 | |
| F573? | 10 | Ruled Line? |
| F574 | i | |
| F575? | 2 | Ruby Align? |
| F576? | 2 | Ruby Overhang? |
| F577? | 2 | Emp Dots Position? |
| F578? | v | Emp Dots Code? |
| F579? | 2 | Emp Line Position? |
| F57A? | 2 | Emp Line Mode? |
| F57B? | 4 | *Child Page Tree? |
| F57C? | 4 | *Parent Page Tree? |
| F57D | i | |
| F57E | i | |
| F57F | i | |
| F580 | i | |
| F581? | 0 | *Italic |
| F582? | 0 | *Italic |
| F583 | i | |
| F584 | i | |
| F585 | i | |
| F586 | i | |
| F587 | i | |
| F588 | i | |
| F589 | i | |
| F58A | i | |
| F58B | i | |
| F58C | i | |
| F58D | i | |
| F58E | i | |
| F58F | i | |
| F590 | i | |
| F591 | i | |
| F592 | i | |
| F593 | i | |
| F594 | i | |
| F595 | i | |
| F596 | i | |
| F597 | i | |
| F598 | i | |
| F599 | i | |
| F59A | i | |
| F59B | i | |
| F59C | i | |
| F59D | i | |
| F59E | i | |
| F59F | i | |
| F5A0 | i | |
| F5A1? | 4 | Begin P? |
| F5A2? | 0 | End P? |
| F5A3 | i | |
| F5A4 | i | |
| F5A5? | v | Koma Gaiji? |
| F5A6? | 0 | Koma Emp Dot Char? |
| F5A7? | 4 | Begin Button? |
| F5A8? | 0 | End Button? |
| F5A9? | 0 | Begin Ruby? |
| F5AA? | 0 | End Ruby? |
| F5AB? | 0 | *Begin Ruby Base? |
| F5AC? | 0 | *End Ruby Base? |
| F5AD? | 0 | *Begin Ruby Text? |
| F5AE? | 0 | *End Ruby Text? |
| F5AF | i | |
| F5B0 | i | |
| F5B1? | 0 | Koma Yokomoji? |
| F5B2? | 0 | |
| F5B3? | 0 | Tate |
| F5B4? | 0 | Tate |
| F5B5? | 0 | Nekase |
| F5B6? | 0 | Nekase |
| F5B7? | 0 | Begin Sup? |
| F5B8? | 0 | End Sup? |
| F5B9? | 0 | Begin Sub? |
| F5BA? | 0 | End Sub? |
| F5BB? | 0 | |
| F5BC? | 0 | |
| F5BD? | 0 | |
| F5BE? | 0 | |
| F5BF | i | |
| F5C0 | i | |
| F5C1? | 0 | Begin Emp Line? |
| F5C2? | 0 | |
| F5C3? | 2 | Begin Draw Char? |
| F5C4? | 0 | End Draw Char? |
| F5C5? | 2 | |
| F5C6? | 2 | |
| F5C7? | 0 | |
| F5C8? | 2 | Koma Auto Spacing? |
| F5C9? | 0 | |
| F5CA? | 2 | Space |
| F5CB? | v | |
| F5CC? | 2 | |
| F5CD | i | |
| F5CE | i | |
| F5CF | i | |
| F5D0 | i | |
| F5D1? | v | Koma Plot? |
| F5D2? | 0 | *EOL |
| F5D3 | i | |
| F5D4? | 2 | Wait |
| F5D5 | i | |
| F5D6? | 0 | Sound Stop? |
| F5D7? | 14 | Move Obj? |
| F5D8? | 4 | *Book Font? |
| F5D9? | 8 | Koma Plot Text? |
| F5DA? | 2 | |
| F5DB? | 2 | |
| F5DC? | 2 | |
| F5DD? | 2 | Char Space? |
| F5DE | i | |
| F5DF | i | |
| F5E0 | i | |
| F5E1 | i | |
| F5E2 | i | |
| F5E3 | i | |
| F5E4 | i | |
| F5E5 | i | |
| F5E6 | i | |
| F5E7 | i | |
| F5E8 | i | |
| F5E9 | i | |
| F5EA | i | |
| F5EB | i | |
| F5EC | i | |
| F5ED | i | |
| F5EE | i | |
| F5EF | i | |
| F5F0 | i | |
| F5F1? | 2 | Line Width? |
| F5F2? | 4 | Line Color? |
| F5F3? | 4 | Fill Color? |
| F5F4? | 2 | Line Mode? |
| F5F5? | 4 | Move To? |
| F5F6? | 4 | Line To? |
| F5F7? | 4 | Draw Box? |
| F5F8? | 4 | Draw Ellipse? |
| F5F9? | 6 | |
| F5FA | i | |
| F5FB | i | |
| F5FC | i | |
| F5FD | i | |
| F5FE | i | |
| F5FF | i | |