="pred" href="prologpack.html#pack_remove/1">pack_remove/1Remove the indicated package. pack_search/1Query package server and installed packages and display results. pack_upgrade/1Try to upgrade the package Pack. pack_url_file/2True if File is a unique id for the referenced pack and version. ssl_verify/5Currently we accept all certificates.

F.2.38 library(prologtrace)

list_tracing/0	List predicates we are currently tracing.
notraceall/0	Remove all trace points.
trace/1	Print passes through _ports_ of specified predicates.