About [[Blockly:PROCEDURES CALLRETURN HELPURL/en]]
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This URL makes me confusing due to so-called "Following parameters are not used: %2", where Procedure (computer science) is redirected to Subroutine, could we change it to https://en.wikipedia.org/wiki/Subroutine ?
PROCEDURES DEFRETURN HELPURL ("https://en.wikipedia.org/wiki/Subroutine
") and PROCEDURES DEFNORETURN HELPURL ("https://en.wikipedia.org/wiki/Subroutine
") are ditto.