The sdtpcaction.conf manpage was left out of the manpage packages. Here is the content of the manpage (bug ID 4230365):
NAME sdtpcaction.conf - sdtpcaction configuration file FILE FORMAT The format of this file is as follows. VERSION : 1.0 SOLARIS_HOST : Host name of Solaris DEFAULT : default PC_TYPE PC_HOST : Host name for PC PC_TYPE : SunPC | SoftWindows | RemotePC Optional: PC_HOME : Directory shared by PC and Solaris. Can be used if for security reason the user does not want to map unix home directory to PC. INITIALIZATION_COMMAND : command to initialize PC emulator CLIENT_NAME : ICCCM client name of PC emulator window These records are stored for each Solaris hostname. FILES $HOME/.dt/.sdtpcaction.conf PC Proxy configuration file