@ZER02541714(View Post) There is so much peoples asking this, the answer was said an incredible amount of time, I think we could reuse that knowledge a bit...
@16phillipsonds1(View Post) Look at the upper right corner of the 'menu bar', there will be a text box with the text "Search Site", enter keywords about your question and it will find the answer. Do that before asking any question, it's likely to be already answered. Be careful not to post in dead ( Very old ) threads, that is against the rules.
What do you mean? On a "home page" save, you can put links to other saves in signs, by creating a sign and setting the text as described here: https://powdertoy.co.uk/Wiki/W/Walls.html#Sign. As far as I know, you can't copy and paste text from outside the game into the game, so you just have to remember the number or write it down. If you want to see the number for an existing save, find it in TPT then click "Open in Browser" at the bottom, and the save ID number will be up in the URL.