Думи, които започват с малки латински букви
и са резервирани за вградени предикати
на Strawberry Prolog Light, версия 1.6
abs animate assert asserta assert_in
asserta_in arccos arcsin arctg beep
bezier_line bitmap brush button call
ceiling change_style check_box chronometer close
close_window color_text_back color_text const cos
cosh count_successes create_directory cursor delete_file
draw_arc draw_chord draw_pie edit ellipse
equal execute exp fail feof
field fill_polygon float floor for
functor get get_current_directory get_date get_environment_arg
get_file_pos get_html_form get_program_argument get_text get_time
getenv group_box icon integer is
list_box list_length less_than line log
log10 logoff logon max menu
message min mod modify_at modify_menu
mysql_connect mysql_eof mysql_fetch_row mysql_free_result mysql_num_fields
mysql_query mysql_select_db mysql_store_result nl not_deeper_than
not number of on_the_last_step once
open op parent pen position
press_button print printq put radio_button
random read read_new_mail read_sock readf
readln rect rem remove_directory repeat
replace retract retract_at retract_in retractall
rgb round round_rect s_mail scan
select_color select_file select_font send_mail server
set set_at set_content_type set_cookie set_current_directory
set_file_pos set_text shell_execute sign sin
sinh size socket split sqrt
static str_length string_from_ASCII sub_string system_color
terminate text_out tg tgh the_head_of
trace tree_box true true_value update_window
var wait window window_brush write
writeq write_sock writef xor yes_no