Symbols near marks

Let I have 2 files with coordinates of cities and ststions
How could I place abriviations names for each point?
File with coordinates looks like this
68.78,38.54
69,39.91
70.43,40.29
69.78,37.91
If I add short name for example 68.78,38.54, Dush
How could I place this text near triangle?

gmt coast -Gwhite -RTJ -JM6i -S0/200/255 -U -I9/0/0/254 -I4/0/0/64 -I5/0/0/254 -I3/0/0/254 -I1/0/0/254 -I2/0/0/254 -B
gmt plot tjkgmap.csv -RTJ -JM6i -Sc0.1 -G0/254/0 -L -V -B
gmt plot tadjcities.txt -RTJ -JM6i -St0.4 -G255/0/254 -L -V -B
gmt plot sttjlst.csv -RTJ -JM6i -St0.2 -G0/0/254 -L -V -B
gmt end show

suggest you read the gmt (ps)text man page
gmt text [file with points and text] -F+a0+jML+f[font spec]
offset by using the -D option

Thanks, but I failed to follow your advice
gmt begin diffmap png
gmt text stt.txt -F+a0+jML -D
gmt end show

Error not a valid number and may not be decoded properly.
The text fille stt.txt looks like this
69.158203,38.656898,‘CHGR’
69.670998,40.386700,‘CHRDR’
68.780998,38.568802,‘DUSH’
70.316002,39.000000,‘GARM’
67.715401,39.283298,‘GEZN’
69.326599,38.220299,‘IGRN’
71.660004,37.529999,‘MANEM’
68.122803,37.562000,‘SHAA’

Sorry I added -RTJ and it worked
I need to find only right fonts option