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thanks in advance sir?
What really this way to add a file?
beginner sorry

'onetoc2' => 'application/onenote',
'onetmp' => 'application/onenote',
'onepkg' => 'application/onenote',
'ehi' => 'application/onenote',
'ktcf' => 'application/onenote',

can give examples sir?