[dstar_digital] GPS-A setup with IC-E92

[g7guo2004]

Having recently purchased an IC-E92 I have been going through GPS-A 
setup and am wondering what the GPS-A sentence formatter is all about 
and what I should set it to? Also I see there is no symbol available 
for pedestrian. I presume I would have to set the appropriate character 
in "other" but I do not know what that character is. I use APRS and 
with that use the runner symbol. Any help on this would be gratefully 
received. Simon.