 In the Belgian AZERTY layout, the ' key is generated by the combination ; the μ key is located to the right of the ù key on Belgian AZERTY keyboards) then the key for the vowel requiring the accent.Note that the grave-accented letters à è ù (and the acute-accented é), which are part of French orthography, have their own separate keys.Dead-grave and dead-acute (and dead-tilde) would mostly be reserved to "foreign" letters such as Italian ò, Spanish á í ó ú ñ, Portuguese ã õ, etc., or for accented capital letters (which are not present precomposed in the layout).