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Text_Multi_Line_Multi_Style.md

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Text_Multi_Line_Multi_Style.cst

This note collects known offsets for the Text_Multi_Line_Multi_Style.cst sample. The file contains two copies of the XMED data as explained in Anthony Kleine's memory-map documentation. The second copy begins at 0x20E4 and is the one referenced by the memory map. This cast comes from Director MX 2004; the structure matches the 8.5 notes. See XMED_Offsets.md and XMED_FileComparisons.md for additional details.

HEADER

Byte Address Δ prev Bytes Length Bit Description Notes
0x110C — 4 DEMX header obsolete copy

Default style block

The file begins with a short descriptor that defines the base font and several flags used when no other style is applied. Only a handful of values are clear so far:

Byte Address Δ prev Bytes Length Bit Description Notes
0x0018 — 4 width value 0x075E twips
0x001C +0x04 1 style flags 0x44 underline/tabbed
0x001D +0x01 1 alignment byte 0x07 meaning unknown
0x001E +0x01 2 zeros reserved
0x0020 +0x02 12 zero padding
0x002C +0x0C 4 ASCII *YEK header token
0x0030 +0x04 4 possible FG colour bytes FC000000 pairs with next row
0x0034 +0x04 4 digits 0C000C00 (likely BG colour)
0x0038 +0x04 4 digits 14000000 may store margin data
uses color table near 0x1114
0x003C +0x04 4 line spacing 0x00000006
0x0040 +0x04 4 font size 0x0E (14px)
0x0044 +0x04 4 unknown 0x00000004
0x0048 +0x04 4 ASCII muhT token
0x004C +0x04 4 text length 0x0000000D
0x0050 +0x04 4 unknown 0x00000004
0x0054 +0x04 4 ASCII DEMX marker
0x0058 +0x04 4 value 09000000
0x005C +0x04 4 value 00040000
0x0060 +0x04 4 ASCII *SAC
0x0064 +0x04 4 value 0B000000
0x0068 +0x04 4 value 00040000
0x006C +0x04 4 ASCII fniC

unknown

Byte Address Δ prev Bytes Length Bit Description Notes

| 0x120A | 0x0FE | ~0x12A | | text string (first copy) | lines of styled text |

Stylemap table

Byte Address Δ prev Bytes Length Bit Description Notes
0x1334 0x12A 120 style map table six entries
0x16A8 0x374 48 style descriptor 0008 Arial red centered
0x18C4 0x21C 48 style descriptor 0006 yellow left Tahoma
0x196E 0x0AA 48 style descriptor 000B Terminal green
0x1A30 0x0C2 48 style descriptor 0003 orange left
0x21E1 0x8B1 ~0x12A text string (second copy) used version
0x230C 0x12B 120 style map table (repeat) six entries
0x2680 0x374 48 style descriptor 0008 duplicate of 0008
0x26A8 0x28 48 style descriptor 0005 duplicate Arial
0x289C 0x1F4 48 style descriptor 0006 duplicate Tahoma
0x2946 0x0AA 48 style descriptor 000B duplicate Terminal

Style 0008 (Arial)

Offset 0x16A8 stores the first descriptor. The header bytes 30 82 encode bold and italic flags. The short 40, token before the font name holds the size 12px. The final byte 05 selects color index five.

Byte Address Δ prev Bytes Length Bit Description Notes
0x16A8 — 1 style flags 0x30 matches field header
0x16A9 +0x01 1 alignment flags 0x82 italic + editable
0x16AA +0x01 5 unknown numbers header values
0x16AF +0x05 20 "00080000036600000005" fields: StyleId=0008, TextLength=0366, BaseStyleId=0005
0x16C3 +0x14 1 null separator
0x16C4 +0x01 3 ASCII 40, font size token (12px)
0x16C7 +0x03 1 color index 05 (see color table)
0x16C8 +0x01 5 font name "Arial"
0x16CD +0x05 11 zero padding

Inheritance check

BaseStyleId 0005 links this descriptor to an earlier style record. When building the final appearance start from the default block, apply the style with ID 0005, then override its fields with those from style 0008. This chain renders Arial 12px centered text in red, matching the first line.

Style 0006 (Tahoma)

At 0x18C4 another block repeats the layout with the font Tahoma and color index 06 (see color table). The flag byte 02 denotes left alignment.

Byte Address Δ prev Bytes Length Bit Description Notes
0x18C4 — 1 style flags 0x02 left alignment
0x18C5 +0x01 1 alignment byte 0x30
0x18C6 +0x01 1 unknown value 0x82
0x18C7 +0x01 1 unknown value 0x02
0x18C8 +0x01 4 digits "3101" header numbers
0x18CC +0x04 1 0x30 separator
0x18CD +0x01 1 null
0x18CE +0x01 3 ASCII 40, font size token (12px)
0x18D1 +0x03 1 color index 06 (see color table)
0x18D2 +0x01 6 font name "Tahoma"
0x18D8 +0x06 24 padding zeros

Inheritance check

BaseStyleId 000B indicates this style builds on the Terminal descriptor. The chain starts with the default block, then applies style 000B before this record. The result is yellow Tahoma 9px left aligned text as shown in line two.

Style 000B (Terminal)

The block at 0x196E references Terminal with index 0B and the same alignment bytes as the Tahoma style.

Byte Address Δ prev Bytes Length Bit Description Notes
0x196E — 1 style flags 0x30 inherits previous
0x196F +0x01 1 alignment byte 0x30
0x1970 +0x01 1 unknown 0x30
0x1971 +0x01 1 unknown 0x38
0x1972 +0x01 1 unknown 0x02
0x1973 +0x01 3 bytes 30 82 02 header
0x1976 +0x03 4 digits "3101"
0x197A +0x04 1 0x30 separator
0x197B +0x01 1 null
0x197C +0x01 3 ASCII 40, size token
0x197F +0x03 1 color index 08 (see color table)
0x1980 +0x01 8 font name "Terminal"
0x1988 +0x08 16 padding zeros

Inheritance check

BaseStyleId 0002 ties this descriptor back to the default style block. Using the default values and then applying these bytes yields Terminal 18px left aligned text in green, matching the third line.

Style 0003 (Tahoma copy)

Offset 0x1A30 mirrors the previous blocks but links to style ID 0003. The alignment bytes match those of the yellow line.

Inheritance check

This copied Tahoma style lists BaseStyleId 0002, so the final line inherits from the default block and then overrides with this descriptor to display orange text. The later descriptors starting at 0x2680 repeat these structures verbatim. Their offsets correspond to the second XMED copy.

Fonts near 0x2390

Starting at byte 0x2390 a new block lists the fonts used by each style. Each entry begins with the size token 40, followed by the ASCII font name and a one‑byte color index. The fonts appear in the same order as their descriptor blocks.

Byte Address Δ prev Bytes Length Bit Description Notes
0x269C 0x30C 5 font Arial index 5 copy of style 0008
0x274A 0x0AE 8 font Arcade * index 8
0x27F8 0x0AE 5 font arial index 5 lowercase repeat
0x28A6 0x0AE 6 font Tahoma index 6
0x2954 0x0AE 8 font Terminal index 8

Color table

The sequence FFFF0000000600040001 begins at byte offset 0x1114 right after the obsolete DEMX header. It defines five RGB entries used by the style descriptors.

Line style entries

The table below decodes the 20‑digit records found at 0x1334. Field five in each row references the descriptor blocks above. The same values repeat at 0x230C for the second copy.

Offset StyleId F2 TextLength F4 BaseStyleId Notes
0x1334 0004 0000 0029 0000 0008 line 1: red, Arial, centered
0x1371 0005 0000 001F 0000 0006 line 2: yellow, Tahoma
0x13A4 0006 0000 0273 0000 000B line 3: green, Terminal
0x162B 0007 0000 0070 0000 0003 line 4: orange, Tahoma
0x16AF 0008 0000 0366 0000 0005 line 5: red again
0x1A29 0009 0000 0015 0000 0002 table terminator

Style override chain

The BaseStyleId column forms a hierarchy where each descriptor overrides the one before it. Starting from the default block (ID 0002), later styles layer on additional attributes.

Style ID BaseStyleId Notes
000B 0002 Terminal inherits from the defaults
0006 000B Tahoma builds on Terminal
0005 0006 map entry only, no separate descriptor
0008 0005 final Arial style used for lines 1 and 5
0003 0002 orange Tahoma style

Trailing block

Unknown bytes follow the final style descriptor. The segment may hold font or color indices reused by later Director versions.

Byte Address Δ prev Bytes Length Bit Description Notes
0x29D0 0x707 16 bytes 00 00 00 00 00 00 00 00 start of numeric table
0x29E0 +0x10 16 digits 01 34 01 30 81 01 36 30 unknown meaning
0x29F0 +0x10 16 digits 82 02 31 02 46 46 02 30 continuation
0x2A20 +0x30 32 digits 30 82 02 31 35 32 ... numeric table