GRC Documentation tab

Using GRC, open the Properties of a block, select the 'Documentation'
tab. Is there a way to get a hook / callback if the user clicks within
the text box of that tab?

I don't even need the contents of that text box, just the fact that the
user clicked it, and which type of block (label) it is.

Thanks!
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Barry Duggan KV4FV
https://github.com/duggabe