You can have empty lines
You can have spaces wherever you want (all of them removed, including texture name!!!)
Start the line with VerticalPlane=, HorizontalPlane= or Camera= (freestyle plane will be supported later)

COORDINATE SYSTEM:  right-handed, x-y are the horizontal plane, z points upwards

   Z  ^   Y
      | / 
      |/
      *-----> X


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Format of each line is below:
NOTE THE SEMICOLONS, they are vital. If any errors, check syntax *carefully*

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VerticalPlane = x1; y1;  x2; y2;  z-bottom; z-top;    texturename;texturesize

where
x1,y1 - starting point
x2,y2 - ending point

z-bottom, z-top - what they say

texturename - texture file in the same folder as the program, WITHOUT the .bmp extension
texturesize - size of a pixel in the texture as it will be seen in the scene (same units as coordinates)

NOTE DIRECTION (viewed from above):


             NOT VISIBLE FROM HERE

x1,y1 ------------->>>>------------- x2,y2

             VISIBLE FROM HERE


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HorizontalPlane = x1; y1;  x2; y2;  z;    texturename;texturesize

where
x1,y1 - starting point
x2,y2 - ending point

z - what it says

texturename - same as before
texturesize - same as before


NOTE DIRECTION (viewed from above):

  +------------------------------ x2,y2
  |                                 |
  |  floor (visible from above)     |
  |                                 |
x1,y1 ------------------------------+  


x1,y1 ------------------------------+  
  |                                 |
  |  ceiling (visible from below)   |
  |                                 |
  +------------------------------ x2,y2


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Camera = x-pos; y-pos; z-pos;   x-to; y-to; z-to;   fov


x-pos; y-pos; z-pos;  - where the eye is
x-to; y-to; z-to;     - point (NOT direction) on which the view will be centered

fov - distance from the "pos" vector to the plane on which stuff is projected. 
      Suggested value about 1.5-2.  Deines field of view (ZOOM)


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SAMPLE SCENE FILE (this definitely works, given textures exist):


VerticalPlane=6;0; 0;0; 0;3    ;tex1;0.006
VerticalPlane=0;6; 6;6; 0;3    ;writing;0.01
VerticalPlane=0;0; 0;6; 0;3    ;tex1;0.006

HorizontalPlane=0;0; 6;6; 0    ;carpet;0.003
HorizontalPlane=0;6; 6;0; 3    ;tex1;0.006

Camera=0.1;0.1;1.7;  4;6;1.8;  1.7