The licence format, as set out in Regulation (EU) 2015/340, is developed in line with the specifications for personnel licences as required by ICAO Annex 1, and its purpose is to facilitate the recognition of licences at EU level. The means used to display the required information is left to the competent authorities. It should be either first quality paper and/or other suitable material, including plastic cards, which prevent or readily show any alterations or erasures. Any entries to or deletions from the form should be clearly authorised by the competent authority. The size of each page shall be one-eighth A4. There are no EASA requirements for the font type and size. Both the permanent and variable items shall be displayed on or as part of the licence. Only the variable items may appear on a separate or detachable part of the main form. The signature of the holder (as ‘permanent’ item) should appear on the ‘main part’ of the licence.