Following special identifiers are supported:
$thisKeyId which stands for keyid of the key which activated the macro.
$keyId.<keyId abbreviation> which stands for keyid of the key which activated the macro.
I believe the description for the latter line is incorrect (as it's the same as the former).
The reference-manual.md says:
I believe the description for the latter line is incorrect (as it's the same as the former).