srv_data_address
For internal use only.
user
This is linked in when trm_read_user() is used to read the USERDATA.SYS file. You should include the USERDATA.H header file when you want to access fields within USERDATA.SYS.
sysdata
This is linked in when tf_read_sysdata() is used to read the DATAFIT.SYS system file. You should include the SYSDATA.H header file when you want to access fields within DATAFIT.SYS.