Introduction

Since version 2021.01 a new concept has been introduced: Annotation.

Technically an annotation is a time series which does not contain numeric values but just text.

It has been introduced to

• Use in the Annotation Display to show special remarks that are valid for a specific location for a specific period
• Support higher volumes of text than is possible with the comment field of individual time steps of "classic" time series.
• Define the text on a location basis and not time series basis

Besides the text of the annotation itself it is possible to define extra properties which belong to the annotation.

They will have an id, name and a value type.

The value type can be 

• string (free text format)
• double (number format)
• dateTime (stored as numeric value but shown via the date format in Explorer)
• enumeration (choice between predefined texts)

Both the enumerations as properties can be defined both in pure xml as referred to a separate csv file.