If you pick up the latest GIT version, there are some improvements to TAB completion of the input line for files:\
- Indicate directories using
/ - Complete single quoted unique files by closing the quoted atom.
- Complete
?- [prefix<tab>with Prolog file names. - Complete
?- ...library(prefix<tab>with library files and directories.
This should save a bit of typing as well as searching if you forgot the exact name of a library.