It would be great to see button text also as an option, since one button text cannot fit all 
I second this. Would be great if you could add a parameter to adjust for example button-text="Apply here".
I believe it’s now possible using the parameter label="My arbitrary text", though not documented in the official topic. I’ll add it.
[wrap=template key="test button text" label="My arbitrary text"`]
Let's see 👇
[/wrap]
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