How escape a “{” and a “}” in Inno Setup

Question

How can I escape the characters { and } in Inno Setup, the characters are used in the [Registry] section?

{,

Answer 1

I wanted to escape a quotation mark ("). Doubling it does not escape this,

I was able to force the hex-code by using {%|%22}.

On http://www.jrsoftware.org/ishelp/index.php?topic=consts this escaping is show as {%NAME|DefaultValue}. Leaving NAME empty makes it use the hex code.