merge - How can i stop context sensitive help from opening Help if that particular child isn't installed? -

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finally got working in merged scenario. if there topic doesn't exist, since child .chm hasn't been installed in directory, why open anyway blank topic when f1 pressed on control? there mapping , in redirect file , alias file when child .chm installed (this in master). want not open if child .chm doesn't exist. how can accomplish this? or @ least open default topic etc?


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