On Wednesday, September 14, 2016 at 7:24:17 AM UTC-6, wrote:

"Old days"? What Old Days?
Commonly referred to as "Back in the day", "Old school", "When you were just a sparkle in your mothers eye", or for those less sophisticated, "When you were still an itch in your daddy's pants". Hope this helps.

SYM will use the GPS position from your logger and pressure altitude from your instrument. There is a partial list here http://www.cumulus-soaring.com/software-pda.htm and I believe winds and TAS can also be input to SYM from certain instruments.