Use `i to get it. If you hover over the character in the language bar at the top, the text shown has some indications of how to type it. Here, "Prefix: <prefix>

Use `i to get it. If you hover over the character in the language bar at the top, the text shown has some indications of how to type it. Here, "Prefix: <prefix> i", with the prefix being a backtick. The version with a tab afterwards is longer but could be easier to remember for some characters.