the compatibility guarantee ensures that a Go program that works with a
specific Go language version will continue to work with any subsequent version.
</p>

<p>
For instance, the ability to use the prefix <code>0b</code> for binary
integer literals was introduced with Go 1.13, indicated
by [<a href="#Go_1.13">Go 1.13</a>] in the section on
<a href="#Integer_literals">integer literals</a>.