How can I switch on a specific layer in a pdf when giving an external customer a link to that pdf ? I intend to set up separate layers for individual customers within a single pdf if possible, as I shall be adding a load of hyperlinks within that pdf and

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How can I switch on a specific layer in a pdf when giving an external customer a
link to that pdf ? I intend to set up separate layers for individual customers
within a single pdf if possible, as I shall be adding a load of hyperlinks
within that pdf and do not want to create a separate pdf for each customer to
reference…. Thanks for your help