SWI-Prolog version 7.4.2 for amd64

xpce: Usage: 1) xpce --help Display this message (also -h) 2) xpce --version Display version information (also -v) 3) xpce --arch Display architecture 4) xpce --dump-runtime-variables[=format] Dump link info in sh(1) format 5) xpce [options] prolog-file ... [-- arg ...] 6) xpce [options] [-o output] -c prolog-file ... 7) xpce [options] [-o output] -b bootfile -c prolog-file ... Options: -x state Start from state (must be first) -[LGT]size[KMG] Specify {Local,Global,Trail} limits -t toplevel Toplevel goal -g goal Initialisation goal -f file User initialisation file -F file System initialisation file -l file Script source file -s file Script source file -p alias=path Define file search path 'alias' [+/-]tty Allow tty control -O Optimised compilation --nosignals Do not modify any signal handling --nodebug Omit generation of debug info --quiet Quiet operation (also -q) --traditional Disable extensions of version 7 --home=DIR Use DIR as SWI-Prolog home --pldoc[=port] Start PlDoc server [at port]