Use a tilde/ "~" before save id to make it easily accessible for users.
Doing this for you,
Save link signs are very easy,Read this wiki page for all the stuff related to signs.https://powdertoy.co.uk/Wiki/W/Elements:Tools.html#Sign
Here is a save sign text that will open your grenade save when a user clicks on it.Note it will work only in game.
{c:2347984|Click here!}
Darn it you beat me to it!
Lol.
Dude Save doesn't exist is my favorite save, I see it every time.