1/20/2014:
hello uro here

CMP or .cmp files are used by worlds.com only (texture files for worlds). This is probably the only program to make/view them. This was hosted on Jimbly's site under tools but is now not available I believe. (notice the exe and ovl files were last modified in 1999 and 2000, lol)


WHY USE CMP INSTEAD OF BMP?


you don't have to, really only use it to look professional when making a world. the main reason to use cmp is because they allow transparency. (see guide below)


INSTRUCTIONS TO VIEW/CONVERT CMP TO BMP OR OTHER PICTURE FILES:

1)open CMPVIEW.EXE
2)file->open a random .cmp file from either a world's texture directory or the sample I saved (click.cmp)
3)use your print screen key/take a screenshot of your computer(sorry this is the only way to convert)
4)open your favorite picture editing program (I use paint.net)
5)ctrl v or paste your screenshot (if you do this in ms paint it will look shitty so use gimp or paint.net or something else)
6)select the 128x128 picture
7)resize to selection
8)save as your preferred file type

INSTRUCTIONS TO CONVERT BMP TO CMP:

1)get a 128x128 texture file you would like to use, and convert it to .bmp using a picture editing program or resize to 128x128 if it is not already
2)cut/copy and paste to the directory this readme is in
3)right click and edit COMPIT.BAT
4)ignore the lines with rem before them. these are just examples. compimg  -ace -c255 -pt -r0 -l0,0 click.bmp %2 %3 %4 %5 %6 %7 %8 %9 should be there. simply replace click.bmp with the texture file you have selected (example, if you have a leaf texture it should be a 128x128 bmp named leaves.bmp. so you would replace click.bmp with leaves.bmp.)
5)save COMPIT.BAT
6)start it up
7)you should now have a new .cmp file with the same name as the .bmp texture file you created. simply paste this to the texture folder of the world you are working on and put tex/name.cmp when you are editing in-game.

TRANSPARENCY

if you read in the COMPIT.BAT file it should say that "the -t is for transparency". this is very useful because .bmp files do not allow transparency. (if you tried in game the ball.bmp you would have a square instead of ball.cmp where you would have a circle)

1)repeat steps 1-4 above. this time you should have a 128x128 bmp file with a color around something to mark transparency, like the example I have is white around a brown ball.
2)you should see the rem example at the top in the BAT file. simply add a -t with a space after %9
3)to determine what color will be marked as transparent, you can add coordinates to -t. just do the same as the -l0,0, so -tn,n. 0,0 is default when you don't put anything, and it is the coordinates for the top left pixel for the image, which would be white in the ball example. so it would make all the other colors in the image that are white transparent. (255 255 255 rgb)
4)after adding the -t or -tn,n, replace the click.bmp with your own, save COMPIT.BAT and run it.
5)you should now have a new .cmp file with the same name as the .bmp texture file you created, and when used in game it should have parts of it transparent.

UPDATE 2016:

HIGH RES PICS

please see readme_MOV.txt for instructions on how to make textures higher than 128px.

thanks for reading