@@date.k :days.int 0 :lang.language :number.bool false :
  Date formatted as "16 June 1910" (^:lang de: "16. Juni 1910"), offset by
  ^:days days from today (^:days 1 is tomorrow, ^:days -1 is yesterday).
  ^:lang selects the language of the month name and the date form; without
  it the document-wide Language state variable applies (default en).
  ^:number true gives the numeric form, which is language-specific in
  order, separator, and padding: "6/16/1910" (en, month first),
  "16.06.1910" (de, day first, zero-padded per DIN 5008)
@@

@@date.* :: @eval date.date(K) eval@ @@

@@datetime.k :days.int 0 :lang.language :number.bool false :
  Date and time formatted as "16 June 1910, 13:10" (^:lang de:
  "16. Juni 1910, 13:10"), offset by ^:days days from today (^:days 1 is
  tomorrow, ^:days -1 is yesterday).  ^:lang and ^:number select the
  language and the numeric form as for ^@date
@@

@@datetime.* :: @eval date.datetime(K) eval@ @@

@@timestamp.k : Date and time formatted as "1910.06.16-12:34" @@
@@timestamp.* :: @eval time.strftime("%Y.%m.%d-%H:%M") eval@ @@

@@serialdate.k : Date formatted as "YYMMDD" @@
@@serialdate.* :: @eval time.strftime("%y%m%d") eval@ @@

@@year.k : Current year formatted as "20XX" @@
@@year.* :: @eval time.strftime("%Y") eval@ @@