...
'Tag' sets or updates a reference date as a '"recorddatetime'"-tag in the XML-file. This reference date is ALWAYS today's date.
...
tag_and_no_shift will set a new reference date to today's date or update an existing reference date.
This reference date will be added/updated in the XML-file as a '"recorddatetime'"-tag.
it will not change any other date in the XML-file.
...
shift_and_tag ensures that all other dates in the XML-file are adjusted in reference to today's date.
Afterwards it will update the '"recorddatetime'"-tag.
Suppose that today's day is :
...
*The 'recorddatetime'-tag needs to exist in the XML-file prior to executing it, else it will not change the dates according to today's date but it will add a '"recorddatetime'"-tag.
no_tag_and_no_shift will not create or update the '"recorddatetime'"-tag and it will not adjust all other dates according to today's date.
*If there is a '"recorddatetime'"-tag already exists in the XML-file and you run EVS with no_tag_and_no_shift, the tag will be removed.
...