First of all run sauerbraten.bat (if you are running windows that is), then
press "e" on your keyboard.

Then press "esc"

Use your arrow keys to highlight "editing" then press "enter".

Then go to "map operations"

Take note of the savemap and loadmap commands in this menu. You will
need them later.

At the bottom of the screen you can set the size of the undo megs cache
so you can undo more than you can by default. You can also add your
name to your map once it is finished from this menu. Also if you need more room in you
map you can use the increase mapsize command.

Then create a newmap of any size.  (Take note that newmap 256^3
makes a map that is 256 cubes by 256 by 256)

Now you should have a flat boring map to build upon, like this:





Try flying around to get used to it. Then look directly down on the
nice texture on the ground like this:







You can now use your left mouse button and mouse to highlight some cube
faces like this (Aim like a gun. You can release the lmb once you are
finished and your selection will stay there):

You can now start to create/move some cubes.(select the cubes then...)
Scroll up, then down to get an idea of how it works.
This should happen:







You can select any face of a cube. This allows you to do things like
this:







Now, just say you want really big or small cubes, you can use the "g" +
"scroll" feature of sauerbraten to change the grid size. Hold down "g"
then scroll forward or back to get the correct grid size. If you don't
understand check out these pics:











Maybe you want to deform a cube. "q" + "scroll" will deform the corner you are aiming at. You can also use "scroll" to deform your current selection (can be a corner, a cube or many cubes) You should be able to do
something like this: (i changed the texture on some cubes)







To change the texture of a side of a cube (or selection of cubes).
Select them, then use the "t" + "scroll" command to change the texture
to one you like. (see above pic)



To use lighting, type ~newent light lightradius red green blue. eg for a white light that has a medium sized radius type ~newent light 200 255 255 255. Lighting needs to be calculated before it shows up in your map. You can find the calculating function + other lighting settings in the lighting section of the "editing" menu. pic (old lighting model):







you can use the scroll button (held down) to select cube corners. These can then be pushed and pulled by using the scroll button (by scrolling up and down). pic:







If you want to rotate a cube use "r" + "scroll". Each time you scroll
it moves 90 degrees.



Some other editing buttons are:

z  - undo last action

space - deselect cubes

c  - copy selection

v  - paste copied selection

x - flip selected cube

e - to get into and out of editing mode (for playtesting, etc.)



That is it. (Now would be a good time to save your map and add your
name to it)

You can now know the editing features of sauerbraten. Have
fun mapping.

If you find any bugs or have any trouble doing something, go to
www.cubeengine.com and
click on forums.