Tactical Operations 1/TACTICAL.BIN/command/hint/cncmap.doc

Text File | 1996-07-08 | 19.7 KB | 471 lines

THE COMMAND & CONQUER MAPS

by Vladan Bato ([e-mail])

This document explains the format of the maps and the associated graphics
files. It has also a complete listing of all available map values.
This document is meant for poeple who want to make a C&C scenary editor.
You can use it to edit manually the maps but IMHO it's a suicide if you can't
see what you are doing.

ABOUT .MIX FILES

First of all I will explain the structure of MIX files, since all the
graphics are in the TEMPERAT, DESERT, and WINTER.MIX files.

Each MIX file contains several internal files that can be extracted. I will
refer to the intarnal files as just "files".
The MIX file is made up of two parts : the first one is the Header, the
second one is the body which contains all the files.

The structure of the header is :
(I will use pascal notation)

Header = record
           NumFiles   : word;       {Number of internal files}
           BodyLength : longint;    {Length of the body}
           Index : array [1..NumFiles] of
                     record
                       Unknown1 : word;   {If somebody knows what are these}
                       Unknown2 : word;   {please tell me }
                       Start : longint;   {Offset of file in the body}
                       Size  : longint;   {Size of the file}
                     end;
         end;

Of course you can't use such a structure because its length is not fixed.
Note that the offsets are relative to the start of the body so to find the
actual offset in the MIX you have to add the size of the header which is
  NumFiles*12+6

Note also that the records in the Index are not in the same order as the
files are fisically stored in the MIX. In this document I will always refer
to the record number in the index and not to the file's actual position in
the MIX.

ABOUT THE MAP

All the maps are 64x64 squares large. There are 2 bytes of information for
each square, thus the file is 8192 bytes long.
The first of the two bytes indicates what I call an "element" and (as we'll
see) each element corresponds to one of the files inside TEMPERAT, DESERT and
WINTER.MIX. An element can be a bridge, a road segment, etc. Each element is
made up of several tiles and in fact the second byte indicates the tile.

There are elements of various sizes : from 1x1 to 6x8.
(I will always write the dimensions as WidthxHeight)
The tile numbers range from 0 to WxH-1.
However there are some tiles that I call "empty tiles" because they don't
have any image associated with them. If you try using them C&C will display
the default terrain for that Theater. There are empty tiles especially in the
corners of large elements.

An example may be useful :

The SW-NE bridge in the temparate theater has two empty tiles:
  XXOr     X - Empty tile   O - other tiles
  wbbO     b - Bridge
  Obbw     w - Water           (This is probably wrong, I can't check now)
  rOOO     r - road

We can see that in the upper left corner there are two empty tiles.
We can put the values 00 and 01 in our map (for the second byte, the first
would be A5h for the bridge), in that case we'll see some grass there. But we
can replace that two tiles with anything else without disturbing the rest.
What I mean is that if we changed any other tile, a piece of river would be
missing or a rock could be cut, ruining the map, but if we replace the empty
tiles everything is ok.

So, when we have an empty tile, we can leave it there, or replace it with
anything else. There are two exceptions to this rule however:
1) Sometimes the empty tiles should be water, but if we don't replace them
   C&C will show land in the middle of our lake or sea;
2) There are elements containing roads that finish in one of the corners, so
   that the next element must have an empty tile in the opposite corner to
   stick to the other.
An example might help :

Imagine that we have two road sections like these :
  OOrr OOrr
  Orrr Orrr
  rrrO rrrO
  rrOO rrOO

and we want to stick them diagonally :
       OOrr
       Orrr
       rrrO
       rrOO
   OOrr
   Orrr
   rrrO
   rrOO

Something is obviously missing we need to add some tiles to fill it like this
       OOrr
       Orrr
       rrrO
      RrrOO
   OOrrR
   Orrr
   rrrO
   rrOO

The solution can be to have two elements like these :
   OOOO  ROOO
   OOOO  OOOO
   OOOO  OOOO
   OOOR  OOOO
or to have one little element with empty tiles :
   RX
   XR    (Where X are empty tiles)

And now we can put this between the two road sections, replacing the empty
tiles with the corner tiles of the road sections.

There are many road sections like this and  I've indicated them with (Conn.)
in the table at the end of this document.

ABOUT THE DESERT, TEMPERAT, and WINTER.MIX FILES

These are the files that hold the graphics for the elements. There's one file
inside the MIX for each element, and each file has several tiles inside.
There are other files inside the MIXes, probably for the trees and other
ovarlay elements but I don't know the format. If somebody knows their format,
please let me know.

In each MIX there's also a palette, the entries are :
DESERT.MIX   entry n. 26
TEMPERAT.MIX entry n. 62
WINTER.MIX   entry n. 62

I will now explain the format of the files with map graphics.
First of all there's a header with the following structure:

Header = record
           Width  : word;  {Width of images, always 24 (18h)}
           Heigth : word;  {Heigth of images, always 24}
           NumTil : word;  {Number of Tiles (may differ from num. of Images}
           Zero1  : word;  {Seems to be always 0000h}
           Size   : longint; {size of file}
           ImgStart : longint; {Offset of first image}
           Zero2  : longint; {Seems to be always 00000000h}
           ID1    : word;    {Always FFFFh}
           ID2    : word;    {Always 1A0Dh (or 0D1Ah I can't remeber}
           Index2 : longint;    {Offset of Index2}
           Index1 : longint;    {Offset of Index1} {Explained later}
         end;

The images follow the header but I suppose they could be anywhere.
They are all 24x24 pixel, uncompressed and are one after the other.
Note that the number of images may differ from the number of tiles if there
are some empty tiles. If there are empty tiles the actual number of images
can be smaller than the number of tiles. To work out the number of images you
can use the formula : (Index1-ImgStart)/(24*24). However you won't have to do
this if the index is not corrupt.

Index1 has the following format

Index1 : array [0..NumTil-1] of byte;

where NumTil is th number of tiles.

Each entry in Index1 corresponds to one tile, and indicates which image (of
that file) is associated with it. If the entry is FFh than that tile is
empty.

Index2 has the same size as Index1 but is always filled with zeros (sometimes
there's a 1 somewhere but I don't know it's meaning).

Note that there's no way to know the dimension (Width and Height) of the
Element. If there are 6 tiles it could be 6x1, 1x6, 3x2, 2x3. I worked out
the dimensions of all elements by myself (It's easy, all you have to do is
to try different widths and look at the screen).


For example a procedure that has to display element 61h, tile 3 of the
Desert theater would do :
1) Look in the table and find in which file it is in (entry 168 of DESERT.MIX)
2) Open that file (seek it inside the MIX)
2) Read the Header
3) Read Index1 and read the 4th byte (for tile 3), let it be N
4) Seek ImgStart+Width*Height*N
5) Read the Image and display it

AND FINALLY THE TABLE

Here is the table of all available map values (element numbers), the
dimensions and the relative entries in the DESERT, WINTER, and TEMPERAT.MIX
There's also a brief description for those that don't want or don't know how
to write an editor. However I think that it will be difficult to stick the
elements together without seeing them.

An "x" means that the element doesn't exist in that theater. In fact there are
many elements that exist only in one theater and will show as black holes in
the others (causing the HOM effect). The WINTER and TEMPERATE theaters are
however very similar, and differ only in a few tiles.
The roads and cliffs are mostly the same for the three teaters, but be
careful about the river and coast elements because they are not the same.

  V  | DES | TEM | WIN | Dim.  | Description
-----+-----+-----+-----+-------+----------------------------------------------
 00h | 007 | 011 | 028 | [4x4] | Default terrain
 01h | 002 | 007 | 007 | [1x1] | Water (not animated)
 02h |  x  | 009 | 009 | [2x2] | Water
 03h |  x  | 087 | 087 | [3x3] | Coast WD (1)
 04h |  x  | 106 | 105 | [3x3] | Coast WD
 05h |  x  | 126 | 124 | [1x1] | Rock in water
 06h |  x  | 143 | 140 | [2x1] | Rock in water
 07h |  x  | 159 | 157 | [3x3] | Coast WD
 08h |  x  | 018 | 017 | [3x3] | Fjord WD
 09h |  x  | 024 | 023 | [3x3] | Coast WU
 0Ah |  x  | 031 | 031 | [3x3] | Coast WU
 0Bh |  x  | 037 | 037 | [3x3] | Coast WU
 0Ch |  x  | 042 | 042 | [3x3] | Coast WU
 0Dh | 106 | 074 | 074 | [2x2] | Cliff Left Edge
 0Eh | 122 | 093 | 092 | [2x3] | Cliff Wu-Wd     (2)
 0Fh | 138 | 112 | 110 | [2x2] | Cliff W-E
 10h | 154 | 131 | 128 | [2x2] | Cliff W-E
 11h | 170 | 147 | 144 | [2x2] | Cliff W-E
 12h | 185 | 163 | 161 | [2x3] | Cliff Wd-Eu
 13h | 200 | 180 | 179 | [2x2] | Cliff Right Edge
 14h | 212 | 195 | 195 | [2x2] | Cliff Top Edge
 15h | 225 | 208 | 209 | [3x2] | Cliff N-S
 16h | 096 | 064 | 064 | [2x2] | Cliff N-S
 17h | 108 | 078 | 078 | [2x2] | Cliff N-S
 18h | 124 | 097 | 096 | [2x2] | Cliff N-S
 19h | 140 | 117 | 115 | [3x2] | Cliff N-S
 1Ah | 157 | 135 | 132 | [2x2] | Cliff Bottom Edge
 1Bh | 172 | 151 | 149 | [2x2] | Cliff Left Edge
 1Ch | 187 | 167 | 166 | [2x3] | Cliff NW-SE
 1Dh | 202 | 184 | 184 | [2x2] | Cliff W-E
 1Eh | 215 | 199 | 200 | [2x2] | Cliff W-E
 1Fh | 228 | 211 | 213 | [2x2] | Cliff W-E
 20h | 098 | 068 | 069 | [2x3] | Cliff Wu-Ed
 21h | 110 | 082 | 082 | [1x2] | Cliff Right Edge
 22h | 126 | 101 | 100 | [2x1] | Cliff Corner S-E Internal
 23h | 142 | 121 | 119 | [3x2] | Cliff Sl-Nr
 24h | 159 | 139 | 136 | [2x2] | Cliff N-S
 25h | 174 | 155 | 153 | [2x2] | Cliff N-S
 26h | 189 | 171 | 170 | [2x2] | Cliff N-S
 27h | 204 | 188 | 188 | [3x2] | Cliff Nl-Sr
 28h | 218 | 202 | 203 | [2x2] | Cliff Bottom Edge
 29h | 230 | 213 | 215 | [2x2] | Cliff Corner N-E External
 2Ah | 101 | 070 | 071 | [2x2] | Cliff Corner S-E Ext
 2Bh | 113 | 084 | 084 | [2x2] | Cliff Corner W-S Ext
 2Ch | 129 | 103 | 102 | [2x2] | Cliff Corner N-W Ext
 2Dh | 145 | 123 | 121 | [2x2] | Cliff Corner N-E Internal
 2Eh | 162 | 141 | 138 | [2x2] | Cliff Corner S-E Int
 2Fh | 177 | 157 | 155 | [2x2] | Cliff Corner W-S Int
 30h | 192 | 173 | 172 | [2x2] | Cliff Corner W-N Int
 31h | 207 | 190 | 190 | [2x2] | Cliff Junction NW-SE
 32h | 221 | 204 | 205 | [2x2] | Cliff Junction SW-NE
 33h |  x  | 027 | 026 | [3x3] | Coast Corner N-W Int
 34h |  x  | 033 | 033 | [3x3] | Coast Corner N-E Int
 35h | 017 |  x  |  x  | [4x1] | Coast WD
 36h | 024 |  x  |  x  | [3x1] | Coast WD
 37h | 041 |  x  |  x  | [6x2] | Coast WD
 38h | 049 |  x  |  x  | [2x2] | Coast WD
 39h | 118 |  x  |  x  | [1x1] | Bush
 3Ah | 134 |  x  |  x  | [1x1] | Bush
 3Bh | 150 |  x  |  x  | [1x1] | Cactus
 3Ch | 166 |  x  |  x  | [1x1] | Cactus
 3Dh | 181 |  x  |  x  | [1x1] | ??? Purple square (probably a bug?)
 3Eh | 196 |  x  |  x  | [2x2] | Bushes
 3Fh | 210 |  x  |  x  | [2x2] | Bushes
 40h | 223 |  x  |  x  | [3x2] | Bushes
 41h | 234 |  x  |  x  | [3x2] | Bushes
 42h | 016 |  x  |  x  | [2x1] | ??? Purple squares (bug ?)
 43h | 105 | 073 |  x  | [1x1] | Bones / Wall    (3)
 44h | 121 | 092 |  x  | [1x1] | Bones / Wall    (3)
 45h | 137 | 111 |  x  | [1x1] | Mud / UFO       (3)
 46h | 153 | 130 |  x  | [1x1] | Rock / UFO      (3)
 47h | 169 |  x  |  x  | [2x2] | Gray Sand
 48h | 184 |  x  |  x  | [6x4] | Gray Sand
 49h | 199 | 179 | 178 | [4x2] | Mud
 4Ah |  x  | 194 | 194 | [3x2] | Mud
 4Bh |  x  | 045 | 045 | [3x2] | Fjord WU
 4Ch | 072 | 147 | 047 | [2x2] | Water (anim.)
 4Dh | 078 | 049 | 049 | [2x2] | Water (anim.)
 4Eh | 084 |  x  |  x  | [3x2] | Coast WD
 4Fh |  x  | 116 | 114 | [3x2] | Destroyed House
 50h |  x  | 134 | 131 | [2x1] | Walls
 51h |  x  |  x  | 148 | [4x2] | Snow
 52h | 001 | 006 | 006 | [1x1] | Rock
 53h | 003 | 008 | 008 | [2x1] | Rock
 54h |  x  | 010 | 010 | [3x1] | Rock
 55h |  x  |  x  |  x  | [ x ] | ?
 56h |  x  |  x  |  x  | [ x ] | ?
 57h |  x  |  x  |  x  | [ x ] | ?
 58h |  x  | 175 | 174 | [3x3] | Coast WD
 59h |  x  | 191 | 191 | [2x2] | Coast Corner W-N External
 5Ah |  x  | 205 | 206 | [3x3] | Coast Corner S-E Ext
 5Bh |  x  | 215 | 217 | [3x3] | Coast Corner W-S Ext
 5Ch |  x  | 012 | 011 | [2x2] | Coast Corner N-E Ext
 5Dh | 104 | 072 | 073 | [2x2] | Road Bottom End
 5Eh | 120 | 091 | 091 | [2x2] | Road Left End
 5Fh | 136 | 110 | 109 | [1x2] | Road Top End
 60h | 152 | 129 | 127 | [2x2] | Road Right End
 61h | 168 | 146 | 143 | [3x4] | Road S-N
 62h | 183 | 162 | 160 | [2x3] | Road S-N
 63h | 198 | 178 | 177 | [3x2] | Road S-N
 64h | 211 | 193 | 193 | [3x2] | Road S-N
 65h | 224 | 207 | 208 | [4x3] | Road W-E
 66h | 095 | 063 | 063 | [4x2] | Road W-E
 67h | 107 | 077 | 077 | [2x3] | Road W-E
 68h | 123 | 096 | 095 | [2x2] | Road W-E
 69h | 139 | 115 | 113 | [4x3] | Road Wu-Ed
 6Ah | 156 | 133 | 130 | [3x3] | Road T N--W+E  (4)
 6Bh | 171 | 150 | 147 | [3x3] | Road Y S--N+E  (4)
 6Ch | 186 | 166 | 164 | [3x3] | Road Y S--N+E
 6Dh | 201 | 183 | 182 | [3x2] | Road T S--W+E
 6Eh | 214 | 198 | 198 | [3x3] | Road T W--N+S
 6Fh | 227 | 210 | 211 | [3x3] | Road + W-N-E-S
 70h | 097 | 067 | 067 | [3x3] | Road Corner N-E
 71h | 109 | 081 | 081 | [3x2] | Road Corner S-E
 72h | 125 | 100 | 099 | [3x3] | Road Corner W-S
 73h | 141 | 120 | 118 | [3x3] | Road Corner W-N
 74h | 158 | 138 | 135 | [3x3] | Road Diagonal NW-SE      (5)
 75h | 173 | 154 | 152 | [3x3] | Road Diag NW-SE
 76h | 188 | 170 | 169 | [2x2] | Road Diag NW-SE (Conn.)  (5)
 77h | 203 | 187 | 187 | [2x2] | Road Diag NW-SE (Conn.)
 78h | 217 | 201 | 202 | [2x2] | Road Corner W-SE (Conn.)
 79h | 229 | 212 | 214 | [2x2] | Road Corner N-SE (Conn.)
 7Ah | 100 | 069 | 070 | [2x2] | Road Y SE--N+W (Conn.)
 7Bh | 112 | 083 | 083 | [2x2] | Road Corner E-NW (Conn.)
 7Ch | 128 | 102 | 101 | [2x2] | Road Corner S-NW (Conn.)
 7Dh | 144 | 122 | 120 | [2x2] | Road Y NW--S+E (Conn.)
 7Eh | 161 | 140 | 137 | [3x3] | Road Diag SW-NE
 7Fh | 176 | 156 | 154 | [3x3] | Road Diag SW-NE
 80h | 191 | 172 | 171 | [2x2] | Road Diag SW-NE (Conn.)
 81h | 206 | 189 | 189 | [2x2] | Road Diag SW-NE (Conn.)
 82h | 220 | 203 | 204 | [2x2] | Road Corner E-SW (Conn.)
 83h | 232 | 214 | 216 | [2x2] | Road Corner N-SW (Conn.)
 84h | 103 | 071 | 072 | [2x2] | Road Y SW--N+E (Conn.)
 85h | 115 | 085 | 085 | [2x2] | Road Corner W-NE (Conn.)
 86h | 131 | 104 | 103 | [2x2] | Road Corner S-NE (Conn.)
 87h | 147 | 124 | 122 | [2x2] | Road Y NE--W+S (Conn.)
 88h |  x  | 017 | 016 | [5x4] | River W-E
 89h |  x  | 023 | 022 | [5x3] | River W-E
 8Ah |  x  | 030 | 030 | [4x4] | River Wu-Ed
 8Bh |  x  | 036 | 036 | [4x4] | River Wd-Eu
 8Ch |  x  | 041 | 041 | [3x3] | River N-S
 8Dh |  x  | 044 | 044 | [3x2] | River N-S
 8Eh |  x  | 046 | 046 | [3x2] | River N-S
 8Fh |  x  | 048 | 048 | [2x2] | River Corner S-E
 90h |  x  | 052 | 052 | [2x2] | River Corner W-S
 91h |  x  | 014 | 013 | [2x2] | River Corner N-E
 92h |  x  | 020 | 019 | [2x2] | River Corner W-N
 93h |  x  | 026 | 025 | [3x4] | River Y N--W+S
 94h |  x  | 032 | 032 | [4x4] | River Y Eu--W+S
 95h | 055 |  x  |  x  | [4x3] | River W-E
 96h | 060 |  x  |  x  | [4x3] | River W-E
 97h | 067 |  x  |  x  | [6x4] | River Wd-Eu
 98h | 073 |  x  |  x  | [6x5] | River Wu-Ed
 99h | 079 |  x  |  x  | [4x4] | River N-S
 9Ah | 085 |  x  |  x  | [4x4] | River N-S
 9Bh | 018 |  x  |  x  | [6x8] | River Nr-Sl
 9Ch | 025 |  x  |  x  | [5x8] | River Nl-Sr
 9Dh | 042 |  x  |  x  | [3x3] | River Corner E-S
 9Eh | 050 |  x  |  x  | [3x3] | River Corner W-S
 9Fh | 057 |  x  |  x  | [3x3] | River Corner N-E
 A0h | 062 |  x  |  x  | [3x3] | River Corner N-W
 A1h | 009 | 002 | 004 | [3x3] | River Crossing (Road W-E)
 A2h | 010 | 003 | 005 | [3x3] | River Crossing (Road N-S)
 A3h | 047 | 057 | 057 | [3x3] | Falls W-E
 A4h | 048 | 058 | 058 | [3x2] | Falls N-S
 A5h |  x  | 218 | 220 | [4x4] | Bridge SW-NE
 A6h |  x  | 059 | 059 | [4x4] | Fallen Bridge SW-NE
 A7h |  x  | 219 | 221 | [5x5] | Bridge NW-SE
 A8h |  x  | 060 | 060 | [5x5] | Fallen Bridge NW-SE
 A9h | 236 |  x  |  x  | [6x5] | Bridge SW-NE
 AAh | 092 |  x  |  x  | [6x5] | Fallen Bridge SW-NE
 ABh | 237 |  x  |  x  | [6x4] | Bridge NW-SE
 ACh | 093 |  x  |  x  | [6x4] | Fallen Bridge NW-SE
 ADh | 056 |  x  |  x  | [3x3] | Fjord WD
 AEh | 061 |  x  |  x  | [3x2] | Coast WU
 AFh | 068 |  x  |  x  | [3x2] | Coast WU
 B0h | 074 |  x  |  x  | [4x1] | Coast WU
 B1h | 080 |  x  |  x  | [3x1] | Coast WU
 B2h | 086 |  x  |  x  | [6x2] | Coast WU
 B3h | 019 |  x  |  x  | [2x2] | Coast WU
 B4h | 027 |  x  |  x  | [3x3] | Fjord WU
 B5h |  x  |  x  | 165 | [2x2] | Snow
 B6h |  x  |  x  | 183 | [4x2] | Snow
 B7h |  x  |  x  | 199 | [4x3] | Snow
 B8h |  x  |  x  | 212 | [4x3] | Snow
 B9h |  x  |  x  | 068 | [4x3] | Snow
 BAh |  x  | 038 | 038 | [3x3] | Coast WR
 BBh |  x  | 043 | 043 | [3x3] | Coast WL
 BCh | 069 |  x  |  x  | [1x1] | Coast Corner S-E Int
 BDh | 075 |  x  |  x  | [1x1] | Coast Corner W-S Int
 BEh | 081 |  x  |  x  | [1x1] | Coast Corner N-E Int
 BFh | 087 |  x  |  x  | [1x1] | Coast Corner N-W Int
 C0h | 020 |  x  |  x  | [3x3] | Coast Corner S-E Int
 C1h | 028 |  x  |  x  | [3x3] | Coast Corner N-W Int
 C2h | 043 |  x  |  x  | [1x2] | Coast WL
 C3h | 051 |  x  |  x  | [1x3] | Coast WL
 C4h | 058 |  x  |  x  | [1x3] | Coast WR
 C5h | 063 |  x  |  x  | [1x2] | Coast WR
 C6h | 070 |  x  |  x  | [3x3] | Coast Corner S-E Int
 C7h | 076 |  x  |  x  | [3x3] | Coast Corner S-E Int
 C8h | 082 |  x  |  x  | [3x3] | Coast Corner N-E ?(forgot)
 C9h | 088 |  x  |  x  | [3x3] | Coast Corner N-W ?
 CAh | 021 |  x  |  x  | [4x3] | Coast Corner S-E Ext
 CBh | 029 |  x  |  x  | [4x3] | Coast Corner W-S Ext
 CCh | 044 |  x  |  x  | [4x3] | Coast Corner N-E Ext
 CDh | 052 |  x  |  x  | [4x3] | Coast Corner N-W Ext
 CEh | 059 |  x  |  x  | [3x2] | Coast WD
 CFh | 064 |  x  |  x  | [3x2] | Coast WD
 D0h | 071 |  x  |  x  | [3x2] | Coast WU
 D1h | 077 |  x  |  x  | [3x2] | Coast WU
 D2h | 083 |  x  |  x  | [2x3] | Coast WR
 D3h | 089 |  x  |  x  | [2x3] | Coast WR
 D4h | 022 |  x  |  x  | [2x3] | Coast WL
 D5h | 030 |  x  |  x  | [2x3] | Coast WL
 D6h | 045 |  x  |  x  | [6x1] | Coast WD
 D7h | 053 |  x  |  x  | [4x1] | Coast WD

!! Warning !!
Values from D8h-FEh will crash the game (it just locks on my computer) !
!!

The value FFh indicates the default terrain (I think the 4x4 element is
used).

Notes:

(0) There may be some errors in this table because I typed it in a hurry (you
    don't know how much times it takes), so if you find any errors please
    report them to me.
(1) For Coasts WD, WU, WL, and WR means : Water on the bottom (Down), Top
    (Up), left and right.
(2) For cliffs and roads the two indicate from which to which side the Road
    (or cliff) go. The lowercase letter means up, down, left, right to
    indicate in which part of that side does it start.
    For Example :

    River Wu-Ed :
     OOOOO
     rOOOO
     OrrOO
     OOOrr
     OOOOO

(3) These elements exist in both the DESERT and the TEMPERATE theaters but
    are not the same. I've put a description of both.

(4) For Roads :
     Roas T and Y means that the road splits in the shape of a T or a Y.
     E--N+S means it starts from the east edge than splits in two parts one
     going to the north and the other to the south edge

(5) NW or any other corner means that the road ends in that corner and
    if it says (Conn.) means that it has an empty tile in that corner.
    So you have to use the (Conn.) Elements to stick togheter the other ones.

That's all. I hope this info will be used by somebody to make a scenary
editor (maybe myself ?).