This function will start an iteration over the Annotations of the
specified type that the specified Document has. This function will
return the first Annotation object that has as type the value
specified by the "Type" parameter. If the requested Annotation does not
exist, an error will be prmpted. Subsequent calls to
tip_GetNextAnnotation will return the rest of the Annotations of the
same type, sorted according to their Id.
Return Value:
This function returns an Annotation object (of type CDM_Annotation) if
an Annotation having as type the value of the "Type" parameter is found.
In case that the specified Annotation does not exist, an error message will be prompted.