page_output_immediately
page_screen_output
PAGER
pi
print_answer_id_name
print_empty_dimensions
print_rhs_assign_val
program_invocation_name
program_name
PS1
PS2
PS4
realmax
realmin
return
return_last_computed_value
save_header_format_string
save_precision
saving_history
SEEK_CUR
SEEK_END
SEEK_SET
sighup_dumps_octave_core
sigterm_dumps_octave_core
silent_functions
split_long_rows
stderr
stdin
stdout
string_fill_char
struct_levels_to_print
suppress_verbose_help_message
true
variables_can_hide_functions
warn_assign_as_truth_value
if
warn_comma_in_global_decl
warn_divide_by_zero
warn_empty_list_elements
warn_fortran_indexing
warn_function_name_clash
warn_future_time_stamp
warn_imag_to_real
warn_missing_semicolon
warn_neg_dim_as_zero
warn_num_to_str
warn_reload_forces_clear
warn_resize_on_range_error
warn_separator_insert
warn_single_quote_string
warn_str_to_num
warn_undefined_return_values
warn_variable_switch_label
switch
whos_line_format