Changes as of 2018-10-15

 - Use DATELN$ for signon; no ER TDATE$ or other date/time routines required.

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 Changes as of 2015-03-12

 - Added T to BK2 editing options, for TOCED.
 - Switch to STM$PKG for date stamps; eliminate TDATE$.

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 Changes as of 2010-10-15

 - Added F to BK2 editing options, for FSED.

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 Changes as of 2004-10-06

 - Changed BK2 so alternate editing options (Z,I,M,S) may appear alone as well
   as with E.