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Message: <blockquote data-quote="Saeviomagy" data-source="post: 5204937" data-attributes="member: 5890">Even with a two way portal, there's a bunch of ways to handle things:The portal might have a trigger before transport occurs. That is, you step wholly into a nonspace within the portal and then when some outside trigger happens you are suddenly moved to within the destination portal. Rope tied to someone (or lowered into) the portal would be severed, you can step back before the transport happens and so forth. If the origin portal was under water, water would arrive at the destination in periodic splashes when the trigger occurs.The portal might require a conscious, willing impetus to enter it (this one can be combined with many other portal rules). In this case a person who steps into a portal goes just fine, someone shoved into the portal might bounce off it or simply fall through to the other side as if it weren't there. Rope chucked in would bounce off. If the origin is underwater, the water won't pass through the portal etc.The portal might specifically filter something. If, for example, you have a portal to the plane of fire in your house, you don't really want your living room to catch fire because of it. So fire might be either barred from passing the portal OR destroyed when it passes the portal, or transport might simply not work when someone attempts it with these items.There might be a distance of space between the two ends of the portal. You might have to step into the portal and keep travelling some distance before emerging. Is the portal one-way at the entrance? Or the exit? Or all the way through?There might be a time delay between entering the portal and emerging from it. You might throw in a rope and be unable to pull it back again for a minute.The portal might use a duplication-at-destination mechanism. Normally, someone steps into the portal, is duplicated perfectly at the destination and destroyed at the point of leaving. Pulling back while the transport is ongoing might create clones, result in destruction of the transportee or cause a portal lockdown.I'm sure there's more that I haven't thought of.</blockquote>

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