to specify it explicitly if you have changed the default using the
\cw{ScrollBar} resource.
-\dt \cw{\-log} \e{filename}
+\dt \cw{\-log} \e{logfile}, \cw{\-sessionlog} \e{logfile}
\dd This option makes \cw{pterm} log all the terminal output to a file
as well as displaying it in the terminal.