library

Prolog files

aggregate.pl  -- Aggregation operators on backtrackable predicates
ansi_term.pl
ansi_format/3	Format text with ANSI attributes.
ansi_format/4	Format text with ANSI attributes.
ansi_get_color/2	Obtain the RGB color for an ANSI color parameter.
ansi_hyperlink/2	Create a hyperlink for a terminal emulator using the OSC 8 escape sequence.
ansi_hyperlink/3	Create a hyperlink for a terminal emulator using the OSC 8 escape sequence.
ansi_sgr/2	True when Sequence is the ANSI Select Graphic Rendition sequence that activates the attributes of ClassOrAttributes.
tty_url_hook/2	Hook for location_url/2.
console_color/2	As console_color/3, but for any theme.
console_color/3	Hook that allows for mapping abstract terms to concrete ANSI attributes.
message_line_element/2	Hook implementation that colours the message elements produced by print_message_lines/3.
theme_base/2	Hook that makes Theme a variation of the theme Base.
apply.pl  -- Apply predicates on a list
apply_macros.pl  -- Goal expansion rules to avoid meta-calling
apply_macros_sentinel/0	Used to detect that library(apply_macros) is loaded into the current context explicitly.
expand_phrase/2	Provide goal-expansion for PhraseGoal.
expand_phrase/4	Provide goal-expansion for PhraseGoal.
arithmetic.pl  -- Extensible arithmetic
assoc.pl  -- Binary associations
atom.pl  -- Operations on atoms
backcomp.pl
$apropos_match/2	True if Needle is a sub atom of Haystack.
$arch/2
$argv/1
$declare_module/3	Used in triple20 particle library.
$home/1
$module/2
$set_prompt/1	Set the prompt for the toplevel.
$sig_atomic/1	Execute Goal without processing signals.
$strip_module/3	This used to be an internal predicate.
$version/1
C/3	Used to be generated by DCG.
at_initialization/1	Register goal only to be run if a saved state is restored.
call_cleanup/3	Call Cleanup with an indication of the reason unified to Catcher.
checklist/2
concat/3
concat_atom/2	Concatenate a list of atomic values to an atom.
concat_atom/3	Concatenate a list of atomic values to an atom, inserting Separator between each consecutive elements.
convert_time/2	Convert a time-stamp as obtained though get_time/1 into a textual representation using the C-library function ctime().
convert_time/8	Convert a time stamp, provided by get_time/1, time_file/2, etc.
current_module/2	True if Module is a module loaded from File.
current_mutex/3
current_thread/2
displayq/1	Write term ignoring operators and quote atoms.
displayq/2	Write term ignoring operators and quote atoms.
eval_license/0
export_list/2	Module exports the predicates of List.
feature/2	Control Prolog flags.
flush/0
free_variables/2	Return a list of unbound variables in Term.
hash/1	Demands PredInd to be indexed using a hash-table.
hash_term/2	If Term is ground, Hash is unified to an integer representing a hash for Term.
index/1	Prepare the predicate indicated by Head for multi-argument indexing.
lock_predicate/2
merge/3	Merge the ordered sets List1 and List2 into a new ordered list.
merge_set/3	Merge the ordered sets Set1 and Set2 into a new ordered set without duplicates.
message_queue_size/2	True if Queue holds Size terms.
proper_list/1	Old SWI-Prolog predicate to check for a list that really ends in a [].
read_clause/1
read_clause/2
read_history/6
read_pending_input/3
read_variables/2
read_variables/3
set_base_module/1	Set the default module from which we inherit.
set_feature/2	Control Prolog flags.
setup_and_call_cleanup/3	Call Cleanup once after Goal is finished.
setup_and_call_cleanup/4	Call Cleanup once after Goal is finished, with Catcher unified to the reason.
sformat/2
sformat/3
string_to_atom/2	Bi-directional conversion between string and atom.
string_to_list/2	Bi-directional conversion between a string and a list of character codes.
sublist/3	Succeeds if List2 unifies with a list holding those terms for which call(Goal, Elem) succeeds.
substring/4	Predecessor of sub_string using 1-based Offset.
sumlist/2	True when Sum is the list of all numbers in List.
thread_at_exit/1	Register Goal to be called when the calling thread exits.
trie_insert_new/3
unlock_predicate/2
write_length/3
write_ln/1
base32.pl
base32/2	Translates between plaintext and base32 encoded atom or string.
base32/3	Encode/decode list of character codes using base32.
base64.pl
base64/2	Equivalent to base64_encoded/3 using the options as(atom) and encoding(iso_latin_1).
base64/3	Encode/decode list of character codes using base64.
base64_encoded/3	General the base64 encoding and decoding.
base64_encoded/4
base64url/2	Translates between plaintext and base64url encoded atom or string.
base64url/3	Encode/decode list of character codes using Base64URL.
broadcast.pl  -- Event service
charsio.pl
atom_to_chars/2	Convert Atom into a list of character codes.
atom_to_chars/3	Convert Atom into a difference list of character codes.
format_to_chars/3	Use format/2 to write to a list of character codes.
format_to_chars/4	Use format/2 to write to a difference list of character codes.
number_to_chars/2	Convert Atom into a list of character codes.
number_to_chars/3	Convert Number into a difference list of character codes.
open_chars_stream/2	Open Codes as an input stream.
read_from_chars/2	Read Codes into Term.
read_term_from_chars/3	Read Codes into Term.
with_output_to_chars/2	Run Goal as with once/1.
with_output_to_chars/3	Run Goal as with once/1.
with_output_to_chars/4	Same as with_output_to_chars/3 using an explicit stream.
write_to_chars/2	Write a term to a code list.
write_to_chars/3	Write a term to a code list.
check.pl
check/0	Run all consistency checks defined by checker/2.
checker/2	Register code validation routines.
list_autoload/0	Report predicates that may be auto-loaded.
list_cross_module_calls/0	List calls from one module to another using Module:Goal where the callee is not defined exported, public or multifile, i.e., where the callee should be considered private.
list_format_errors/0	List argument errors for format/2,3.
list_format_errors/1	List argument errors for format/2,3.
list_rationals/0	List rational numbers that appear in clauses.
list_rationals/1	List rational numbers that appear in clauses.
list_redefined/0	Lists predicates that are defined in the global module user as well as in a normal module; that is, predicates for which the local definition overrules the global default definition.
list_strings/0	List strings that appear in clauses.
list_strings/1	List strings that appear in clauses.
list_trivial_fails/0	List goals that trivially fail because there is no matching clause.
list_trivial_fails/1	List goals that trivially fail because there is no matching clause.
list_undefined/0	Report undefined predicates.
list_undefined/1	Report undefined predicates.
list_void_declarations/0	List predicates that have declared attributes, but no clauses.
string_predicate/1	Multifile hook to disable list_strings/0 on the given predicate.
trivial_fail_goal/1	Multifile hook that tells list_trivial_fails/0 to accept Goal as valid.
valid_string_goal/1	Multifile hook that qualifies Goal as valid for list_strings/0.
codesio.pl
format_to_codes/3	Use format/2 to write to a list of character codes.
format_to_codes/4	Use format/2 to write to a difference list of character codes.
open_codes_stream/2	Open Codes as an input stream.
read_from_codes/2	Read Codes into Term.
read_term_from_codes/3	Read Codes into Term.
with_output_to_codes/2	Run Goal with as once/1.
with_output_to_codes/3	Run Goal with as once/1.
with_output_to_codes/4	As with_output_to_codes/3, but Stream is unified with the temporary stream.
write_term_to_codes/3	True when Codes is a string that matches the output of write_term/3 using Options.
write_term_to_codes/4	True when Codes\Tail is a difference list containing the character codes that matches the output of write_term/3 using Options.
write_to_codes/2	Codes is a list of character codes produced by write/1 on Term.
write_to_codes/3	Codes is a difference-list of character codes produced by write/1 on Term.
coinduction.pl
coinductive/1	The declaration :- coinductive name/arity, ... defines predicates as coinductive.
csv.pl  -- Process CSV (Comma-Separated Values) data
ctypes.pl  -- Character code classification
is_digit/3	Succeeds if `C' is a digit using `Base' as base and `Weight' represents its value.
is_paren/2	True if Open is the open-parenthesis of Close.
to_lower/2	Downcase a character code.
to_upper/2	Upcase a character code.
upper_lower/2	True when U is the character code of an uppercase character and L is the character code of the corresponding lowercase character.
date.pl  -- Process dates and times
debug.pl  -- Print debug messages and test assertions
dialect.pl  -- Support multiple Prolog dialects
dicts.pl
dict_fill/4	Implementation for the dicts_to_same_keys/3 OnEmpty closure that fills new cells with a copy of ValueIn.
dict_keys/2	True when Keys is an ordered set of the keys appearing in Dict.
dict_size/2	True when KeyCount is the number of keys in Dict.
dicts_join/3	Join dicts in Dicts that have the same value for Key, provided they do not have conflicting values on other keys.
dicts_join/4	Join two lists of dicts (Dicts1 and Dicts2) on Key.
dicts_same_keys/2	True if List is a list of dicts that all have the same keys and Keys is an ordered set of these keys.
dicts_same_tag/2	True when List is a list of dicts that all have the tag Tag.
dicts_slice/3	DictsOut is a list of Dicts only containing values for Keys.
dicts_to_compounds/4	True when Dicts and Compounds are lists of the same length and each element of Compounds is a compound term whose arguments represent the values associated with the corresponding keys in Keys.
dicts_to_same_keys/3	DictsOut is a copy of DictsIn, where each dict contains all keys appearing in all dicts of DictsIn.
mapdict/2	True when all dicts have the same set of keys and call(Goal, Key, V1, ...) is true for all keys in the dicts.
mapdict/3	True when all dicts have the same set of keys and call(Goal, Key, V1, ...) is true for all keys in the dicts.
mapdict/4	True when all dicts have the same set of keys and call(Goal, Key, V1, ...) is true for all keys in the dicts.
dif.pl  -- The dif/2 constraint
edinburgh.pl  -- Some traditional Edinburgh predicates
edit.pl  -- Editor interface
error.pl
exceptions.pl
catch/4	As catch/3, only catching exceptions for which exception(ErrorType,Ball) is true.
error_term/2	Describe the formal part of error(Formal,ImplDefined) exceptions.
exception/2	If Ball is unbound, adds a delayed goal that tests the error belongs to Type when Ball is instantiated (by catch/3).
exception_term/2	Describe exceptions that are not error(Formal, _) terms.
exception_type/2	Declare all exceptions subsumed by Term to be an exception of Type.
explain.pl  -- Describe Prolog Terms
fastrw.pl  -- Fast reading and writing of terms
files.pl
can_open_file/2	Succeeds if the user has access to `File' in mode `Mode'.
chdir/1	Change Working Directory.
gensym.pl  -- Generate unique symbols
git.pl  -- Run GIT commands
hashtable.pl
ht_del/3	Delete Key-Value from HT.
ht_gen/3	True when Key-Value is in HT.
ht_get/3	True when Key is in HT and associated with Value.
ht_is_hashtable/1	True when HT is a hash table.
ht_keys/2	True when Keys is an ordered set of all keys in HT.
ht_new/1	Create a new hash table.
ht_pairs/2	True when Pairs and HT represent the same association.
ht_put/3	Add a Key-Value to HT.
ht_put/5	Add Key-Value to HT.
ht_put_new/3	As ht_put/3, but fails if Key is already in HT instead of updating the associated value.
ht_size/2	True when Size is the number of key-value pairs in HT.
ht_update/4	True when HT holds Key-Old before and Key-New after this call.
heaps.pl  -- heaps/priority queues
increval.pl  -- Incremental dynamic predicate modification
intercept.pl
intercept/3	Run Goal as call/1.
intercept/4	Similar to intercept/3, but the copy of Handler is called as call(Copy,Arg), which allows passing large context arguments or arguments subject to unification or destructive assignment.
intercept_all/4	True when List contains all instances of Template that have been sent using send_signal/1 where the argument unifies with Ball.
nb_intercept_all/4	As intercept_all/4, but backtracing inside Goal does not reset List.
send_signal/1	If this predicate is called from a sub-goal of intercept/3, execute the associated Handler of the intercept/3 environment.
send_silent_signal/1	As send_signal/1, but succeed silently if there is no matching intercept environment.
iostream.pl  -- Utilities to deal with streams
lazy_lists.pl
lazy_engine_next/4	Lazy list iterator for engines.
lazy_findall/3	True when List is a lazy list containing the instantiations for Template for each answer of Goal.
lazy_findall/4	True when List is a lazy list containing the instantiations for Template for each answer of Goal.
lazy_get_codes/4	Lazy list iterator to get character codes from a stream.
lazy_list/2	Create a lazy list from a callback.
lazy_list/3	Create a lazy list where the next element is defined by.
lazy_list_iterator/4	Directive to create a lazy list iterator from a predicate that gets a single next value.
lazy_list_length/2	True if Len is the length of the materialized lazy list.
lazy_list_materialize/1	Materialize the lazy list.
lazy_message_queue/4	Lazy list iterator for message queues.
lazy_read_lines/4	Lazy list iterator to read lines from Stream.
lazy_read_terms/4	Turn a stream into a lazy list of Prolog terms.
listing.pl
listing/0	Lists all predicates defined in the calling module.
listing/1	List matching clauses.
listing/2	List matching clauses.
portray_clause/1	Portray `Clause' on the current output stream.
portray_clause/2	Portray `Clause' on the current output stream.
portray_clause/3	Portray `Clause' on the current output stream.
lists.pl  -- List Manipulation
macros.pl
expand_macros/5	Perform macro expansion on TermIn with layout PosIn to produce TermOut with layout PosOut.
include_macros/3	Include macros from another module.
macro_position/1	True when Position is the position of the macro.
main.pl  -- Provide entry point for scripts
make.pl  -- Reload modified source files
modules.pl  -- Module utility predicates
nb_set.pl
add_nb_set/2	Insert Key into the set.
add_nb_set/3	Insert Key into the set.
empty_nb_set/1	Create an empty non-backtrackable set.
gen_nb_set/2	Enumerate the members of a set in the standard order of terms.
nb_set_to_list/2	Get the elements of a an nb_set.
size_nb_set/2	Unify Size with the number of elements in the set.
occurs.pl
contains_term/2	Succeeds if Sub is contained in Term (=, deterministically).
contains_var/2	Succeeds if Sub is contained in Term (==, deterministically).
free_of_term/2	Succeeds of Sub does not unify to any subterm of Term.
free_of_var/2	Succeeds of Sub is not equal (==) to any subterm of Term.
occurrences_of_term/3	Count the number of SubTerms in Term that unify with SubTerm.
occurrences_of_var/3	Count the number of SubTerms in Term that are equal to SubTerm.
sub_term/2	Generates (on backtracking) all subterms of Term.
sub_term_shared_variables/3	If Sub is a sub term of Term, Vars is bound to the list of variables in Sub that also appear outside Sub in Term.
sub_var/2	Generates (on backtracking) all subterms (==) of Term.
operators.pl  -- Manage operators
option.pl  -- Option list processing
optparse.pl
opt_arguments/3	Extract commandline options according to a specification.
opt_help/2	True when Help is a help string synthesized from OptsSpec.
opt_parse/4	Equivalent to opt_parse(OptsSpec, ApplArgs, Opts, PositionalArgs, []).
opt_parse/5	Parse the arguments Args (as list of atoms) according to OptsSpec.
parse_type/3	Hook to parse option text Codes to an object of type Type.
ordsets.pl  -- Ordered set manipulation
pairs.pl  -- Operations on key-value lists
persistency.pl
current_persistent_predicate/1	True if PI is a predicate that provides access to the persistent database DB.
db_assert/1	Assert Term into the database and record it for persistency.
db_attach/2	Use File as persistent database for the calling module.
db_attached/1	True if the context module attached to the persistent database File.
db_detach/0	Detach persistency from the calling module and delete all persistent clauses from the Prolog database.
db_retract/1	Retract terms from the database one-by-one.
db_retractall/1	Retract all matching facts and do the same in the database.
db_sync/1	Synchronise database with the associated file.
db_sync_all/1	Sync all registered databases.
persistent/1	Declare dynamic database terms.
pio.pl  -- Pure I/O
pprint.pl  -- Pretty Print Prolog terms
predicate_options.pl  -- Access and analyse predicate options
prolog_autoload.pl
autoload_all/0	Force all necessary autoloading to be done now.
autoload_all/1	Force all necessary autoloading to be done now.
prolog_breakpoints.pl  -- Manage Prolog break-points
prolog_clause.pl
prolog_code.pl
body_term_calls/2	True when BodyTerm calls Goal.
comma_list/2	True if CommaList is a nested term over the ','/2 (';'/2) functor and List is a list expressing the elements of the conjunction.
extend_goal/3	Extend the possibly qualified Goal0 with additional arguments from Extra.
head_name_arity/3	Similar to functor/3, but deals with SWI-Prolog's zero-argument callable terms and avoids creating a non-callable term if Name is not an atom and Arity is zero.
is_control_goal/1	True if Goal is a compiled Prolog control structure.
is_predicate_indicator/1	True when Term is a predicate indicator.
mkconj/3	Create a conjunction or disjunction from two terms.
mkdisj/3	Create a conjunction or disjunction from two terms.
most_general_goal/2	General is the most general version of Goal.
pi_head/2	Translate between a PredicateIndicator and a Goal term.
predicate_label/2	Create a human-readable label for the given predicate indicator.
predicate_sort_key/2	Key is the (module-free) name of the predicate for sorting purposes.
semicolon_list/2	True if CommaList is a nested term over the ','/2 (';'/2) functor and List is a list expressing the elements of the conjunction.
prolog_codewalk.pl  -- Prolog code walker
prolog_program_clause/2	True when ClauseRef is a reference for clause in the program.
prolog_walk_code/1	Walk over all loaded (user) Prolog code.
subterm_pos/5	True when SubTerm is a sub term of Term, compared using Cmp, TermPosition describes the term layout of Term and SubTermPos describes the term layout of SubTerm.
prolog_colour.pl  -- Prolog syntax colouring support.
prolog_config.pl
prolog_config/2	Get information on the configuration of the current Prolog system.
prolog_dump_runtime_variables/0	Dump the current configuration in shell format.
prolog_format.pl  -- Analyse format specifications
prolog_jiti.pl  -- Just In Time Indexing (JITI) utilities
prolog_metainference.pl  -- Infer meta-predicate properties
prolog_pack.pl  -- A package manager for Prolog
prolog_source.pl  -- Examine Prolog source-files
prolog_stack.pl  -- Examine the Prolog stack
prolog_trace.pl  -- Print access to predicates
prolog_versions.pl
cmp_versions/3	Compare to versions.
require_prolog_version/2	Claim that the running Prolog version is at least version Required and provides the requested Features.
require_version/3	Require Component to have version CmpRequired, while Component is know to have version Available.
prolog_wrap.pl  -- Wrapping predicates
prolog_xref.pl  -- Prolog cross-referencer data collection
pure_input.pl
lazy_list_character_count/3	True when CharCount is the current character count in the Lazy list.
lazy_list_location/3	Determine current (error) location in a lazy list.
phrase_from_file/2	Process the content of File using the DCG rule Grammar.
phrase_from_file/3	Process the content of File using the DCG rule Grammar.
phrase_from_stream/2	Run Grammer against the character codes on Stream.
phrase_from_stream/3	Run Grammer against the character codes on Stream.
stream_to_lazy_chars/2	Create a lazy list representing the character codes (chars) in Stream.
stream_to_lazy_codes/2	Create a lazy list representing the character codes (chars) in Stream.
stream_to_lazy_list/2	Create a lazy list representing the character codes (chars) in Stream.
syntax_error/3	Throw the syntax error Error at the current location of the input.
qsave.pl  -- Save current program as a state or executable
quasi_quotations.pl  -- Define Quasi Quotation syntax
quintus.pl
abs/2	Unify `Absolute' with the absolute value of `Number'.
acos/2	Math library predicates.
asin/2	Math library predicates.
atan/2	Math library predicates.
atan2/3	Math library predicates.
atom_char/2	Same as ISO char_code/2.
ceiling/2	Math library predicates.
compile/1	Compile files.
cos/2	Math library predicates.
current_stream/3	SICStus/Quintus and backward compatible predicate.
date/1	Get current date as date(Y,M,D).
floor/2	Math library predicates.
genarg/3	Generalised version of ISO arg/3.
log/2	Math library predicates.
log10/2	Math library predicates.
midstring/3	Too difficult to explain.
midstring/4	Too difficult to explain.
midstring/5	Too difficult to explain.
midstring/6	Too difficult to explain.
no_style_check/1	Same as SWI-Prolog style_check(-Style).
on_exception/3
otherwise/0	For (A -> B ; otherwise -> C).
pow/3	Math library predicates.
prolog_flag/2	Same as ISO current_prolog_flag/2.
raise_exception/1	Quintus compatible exception handling.
round/2	Math library predicates.
sign/2	Math library predicates.
simple/1	Term is atomic or a variable.
sin/2	Math library predicates.
skip_line/0	Skip the rest of the current line (on Stream).
skip_line/1	Skip the rest of the current line (on Stream).
sqrt/2	Math library predicates.
stream_position/3	True when Old is the current position in Stream and the stream has been repositioned to New.
tan/2	Math library predicates.
unix/1	This predicate provides a partial emulation of the corresponding Quintus predicate.
random.pl  -- Random numbers
rbtrees.pl
is_rbtree/1	True if Term is a valid Red-Black tree.
list_to_rbtree/2	Tree is the red-black tree corresponding to the mapping in List, which should be a list of Key-Value pairs.
ord_list_to_rbtree/2	Tree is the red-black tree corresponding to the mapping in list List, which should be a list of Key-Value pairs.
rb_apply/4	If the value associated with key Key is Val0 in Tree, and if call(G,Val0,ValF) holds, then NewTree differs from Tree only in that Key is associated with value ValF in tree NewTree.
rb_clone/3	`Clone' the red-back tree TreeIn into a new tree TreeOut with the same keys as the original but with all values set to unbound values.
rb_del_max/4	Delete the largest element from the tree Tree, returning the key Key, the value Val associated with the key and a new tree NewTree.
rb_del_min/4	Delete the least element from the tree Tree, returning the key Key, the value Val associated with the key and a new tree NewTree.
rb_delete/3	Delete element with key Key from the tree Tree, returning the value Val associated with the key and a new tree NewTree.
rb_delete/4	Same as rb_delete(Tree, Key, NewTree), but also unifies Val with the value associated with Key in Tree.
rb_empty/1	Succeeds if Tree is an empty Red-Black tree.
rb_fold/4	Fold the given predicate over all the key-value pairs in Tree, starting with initial state State0 and returning the final state State.
rb_in/3	True when Key-Value is a key-value pair in red-black tree Tree.
rb_insert/4	Add an element with key Key and Value to the tree Tree creating a new red-black tree NewTree.
rb_insert_new/4	Add a new element with key Key and Value to the tree Tree creating a new red-black tree NewTree.
rb_keys/2	Keys is unified with an ordered list of all keys in the Red-Black tree Tree.
rb_lookup/3	True when Value is associated with Key in the Red-Black tree Tree.
rb_map/2	True if call(Goal, Value) is true for all nodes in T.
rb_map/3	For all nodes Key in the tree Tree, if the value associated with key Key is Val0 in tree Tree, and if call(G,Val0,ValF) holds, then the value associated with Key in NewTree is ValF.
rb_max/3	Key is the maximal key in Tree, and is associated with Val.
rb_min/3	Key is the minimum key in Tree, and is associated with Val.
rb_new/1	Create a new Red-Black tree Tree.
rb_next/4	Next is the next element after Key in Tree, and is associated with Val.
rb_partial_map/4	For all nodes Key in Keys, if the value associated with key Key is Val0 in tree Tree, and if call(G,Val0,ValF) holds, then the value associated with Key in NewTree is ValF, otherwise it is the value associated with the key in Tree.
rb_previous/4	Previous is the previous element after Key in Tree, and is associated with Val.
rb_size/2	Size is the number of elements in Tree.
rb_update/4	Tree NewTree is tree Tree, but with value for Key associated with NewVal.
rb_update/5	Same as rb_update(Tree, Key, NewVal, NewTree) but also unifies OldVal with the value associated with Key in Tree.
rb_visit/2	Pairs is an infix visit of tree Tree, where each element of Pairs is of the form Key-Value.
rb_visit_range/4	Retrieves a range of pairs with keys between Min and Max (inclusive) from a Tree using standard term comparison.
readutil.pl  -- Read utilities
record.pl
current_record/2	True if Name is the name of a record defined in the module associated with Term and Term is the user-provided record declaration.
current_record_predicate/2	True if PI is the predicate indicator for an access predicate to Record.
record/1	Define access predicates for a compound-term.
sandbox.pl
sandbox_allowed_directive/1	Throws an exception if G is not considered a safe directive.
sandbox_allowed_expansion/1	Throws an exception if G is not considered a safe expansion goal.
sandbox_allowed_goal/1	Throw an exception if it is not safe to call G.
format_calls/3	Find ~@ calls from Format and Args.
safe_call/1	Call Goal if it complies with the sandboxing rules.
safe_directive/1	Hook to declare additional directives as safe.
safe_global_variable/1	Declare the given global variable safe to write to.
safe_goal/1	True if calling Goal provides no security risc.
safe_meta/2	Hook.
safe_primitive/1	True if Goal is safe to call (i.e., cannot access dangerous system-resources and cannot upset other parts of the Prolog process).
safe_prolog_flag/2	True if it is safe to set the flag Flag to Value.
settings.pl  -- Setting management
shell.pl  -- Elementary shell commands
shlib.pl
compat_arch/2	User definable hook to establish if Arch1 is compatible with Arch2 when running a shared object.
current_foreign_library/2	Query currently loaded shared libraries.
foreign_library_property/2	True when Property is a property of the foreign library File.
load_foreign_library/1	Load a shared object or DLL.
load_foreign_library/2	Load a shared object or DLL.
reload_foreign_libraries/0	Reload all foreign libraries loaded (after restore of a state created using qsave_program/2.
unload_foreign_library/1	Unload a shared object or DLL.
unload_foreign_library/2	Unload a shared object or DLL.
use_foreign_library/1	Load and install a foreign library as load_foreign_library/1,2 and register the installation using initialization/2 with the option now.
use_foreign_library/2	Load and install a foreign library as load_foreign_library/1,2 and register the installation using initialization/2 with the option now.
solution_sequences.pl  -- Modify solution sequences
sort.pl
locale_sort/2	Sort a list of atoms using the current locale.
predsort/3	Sorts similar to sort/2, but determines the order of two terms by calling Compare(-Delta, +E1, +E2).
statistics.pl  -- Get information about resource usage
strings.pl  -- String utilities
system.pl  -- System utilities
tables.pl  -- XSB interface to tables
terms.pl  -- Term manipulation
thread.pl  -- High level thread primitives
thread_pool.pl  -- Resource bounded thread management
threadutil.pl  -- Interactive thread utilities
ugraphs.pl  -- Graph manipulation library
url.pl  -- Analysing and constructing URL
utf8.pl  -- UTF-8 encoding/decoding on lists of character codes.
varnumbers.pl  -- Utilities for numbered terms
wfs.pl  -- Well Founded Semantics interface
when.pl
when/2	Execute Goal when Condition is satisfied.
writef.pl  -- Old-style formatted write
www_browser.pl
expand_url_path/2	Expand URL specifications similar to absolute_file_name/3.
known_browser/2	True if browser FileBaseName has a remote protocol compatible to Compatible.
www_open_url/1	Open URL in running version of the users' browser or start a new browser.
yall.pl  -- Lambda expressions
zip.pl  -- Access resource ZIP archives