Changes

Always add subfield $2 edtf except after a century.  

Always add subfield $2 edtf except after a century.  

'''<span style="color:red>Subfields $q – Establishment date, $r – Termination date,</span>, $s – Start period, and $t – End period'''

'''<span style="color:red>Subfields $q – Establishment date, $r – Termination date,</span> $s – Start period, and $t – End period'''

<span style="color:red>Record dates associated with a one-time conference, etc., or a single instance of a

<span style="color:red>Record dates associated with a one-time conference, etc., or a single instance of a

series of conferences, etc. ([https://original.rdatoolkit.org/rdachp11-en_rda11-4572.html RDA 11.4.2] et [https://original.rdatoolkit.org/rdachp11-en_rda11-5252.html RDA 11.13.1.8.1]), use subfields $s and $t.</span>

series of conferences, etc. ([https://original.rdatoolkit.org/rdachp11-en_rda11-4572.html RDA 11.4.2] and [https://original.rdatoolkit.org/rdachp11-en_rda11-5252.html RDA 11.13.1.8.1]), use subfields $s and $t.</span>

''<span style="color:red>Example :''

''<span style="color:red>Example :''