From the introduction: Roleplaying is improvised, and sometimes a game can go in an unexpected direction, or explore difficult subjects. These tools help players communicate their boundaries so they can continue to play in a way that’s still fun for everyone. Not all techniques are appropriate for every style of play–some are better suited at the table than for live-action, and others may not be a good match for a given game. Some games may also have similar techniques already built in. As a facilitator, take some time to think about which tools would work best for your story. If playing a GM-less game, have a group discussion on which technique people prefer. You may only need just one, or you may want to combine a few. It’s important to model and practice any tools you’re using before the game starts, so everyone is comfortable using them. Also, discuss as a group what might happen in this particular game that could prompt someone to need to use one of these tools. These techniques will only be successful if the group trusts each other and is committed to having healthy interactions. Once a technique has been agreed upon by the group, it can be used by anyone, at any time, no questions asked. The appropriate response to someone stating their boundaries is “Thank you.”