Open both levels in your editor. Make sure that they both have nice doors, where the actual link part will be somewhere you can touch.
Open your second level and hover your mouse where you want the player to come out, which, when you have 2 doors you want to link, will be directly above the link and a tiny bit to the left, even a little more than in the picture. Then, look in the bottom left corner (circled in the image). Write down those numbers…
Go back to the first level and select a box around your door with your mouse, which will make a grey box around the area you selected, then go up to the top and click the box with a little arrow in it (circled in the image).
A box looking like this will come up. The warp field section is already defined from the grey box you selected earlier.
Fill out the level, new player x, and new player y. On the level, make sure to include the .nw at the end of the level name. For the new player x, use the first number you got from the other level, and for the new player y, use the second number that you got from the last level…A yellow box should how up around the door. That is your link. If you touch it, you get warped to the second level with the new playerx and playery.
Now, hover your mouse just a bit in front of the door you just linked, and slightly to the left, even more than in the picture. Again, note down the numbers in the bottom right corner.
Go to your new level, and select the door.
Click the arrow again, and fill out the forum with the numbers and level from the last level. Click ok.
You are now done. Click play and you can test the level. If the link ends up taking you too far down, decrease the new player y value. Too far up, increase the player y value. Too far to the left, increase the new player x value. Too far to the right, decreased the new player x value. IF you come across an issue where the link doesn’t work at all and you’ve checked that both levels have a yellow box around the doors, and it is just messing up, check that one link doesn’t link you into the other link. When that happens, when you run at a link it puts you into the other link which warps you back to where you just started from, so you are basically stuck. To fix this, just make it link you farther down or up; which ever is needed (or left or right, depending on the situation). If all else fails, re-do your links.
To edit links/delete links, click the circled button. You click the name of the level that your link linked to, and click delete.