diff --git a/flipjump/__init__.py b/flipjump/__init__.py
index 7c3ad574..b4f3ca19 100644
--- a/flipjump/__init__.py
+++ b/flipjump/__init__.py
@@ -18,6 +18,7 @@
 from flipjump.fjm.fjm_consts import FJMVersion, FJ_MAGIC
 from flipjump.interpreter.fjm_run import TerminationStatistics, is_native_engine_active
 from flipjump.utils.classes import TerminationCause
+from flipjump.utils.constants import FLIPJUMP_VERSION as __version__
 from flipjump.utils.functions import get_stl_paths
 from flipjump.utils.exceptions import IODeviceException, FlipJumpException
 from flipjump.interpreter.io_devices.IODevice import IODevice
@@ -26,6 +27,7 @@
 from flipjump.interpreter.io_devices.BrokenIO import BrokenIO
 
 __all__ = [
+    '__version__',
     'assemble_run_according_to_cmd_line_args',
     'assemble',
     'run',
diff --git a/flipjump/flipjump_cli.py b/flipjump/flipjump_cli.py
index 9e4ba202..bbcfecad 100644
--- a/flipjump/flipjump_cli.py
+++ b/flipjump/flipjump_cli.py
@@ -16,7 +16,11 @@
 from flipjump.fjm.fjm_consts import FJMVersion, SUPPORTED_VERSIONS_NAMES
 from flipjump.fjm.fjm_writer import Writer
 from flipjump.interpreter.io_devices.cli_devices import IO_MODES, make_io_device, split_io_mode
-from flipjump.utils.constants import LAST_OPS_DEBUGGING_LIST_DEFAULT_LENGTH, DEFAULT_MAX_MACRO_RECURSION_DEPTH
+from flipjump.utils.constants import (
+    LAST_OPS_DEBUGGING_LIST_DEFAULT_LENGTH,
+    DEFAULT_MAX_MACRO_RECURSION_DEPTH,
+    FLIPJUMP_VERSION,
+)
 from flipjump.utils.exceptions import IODeviceException
 from flipjump.utils.functions import get_file_tuples, get_temp_directory_suffix
 
@@ -340,6 +344,13 @@ def add_universal_arguments(parser: argparse.ArgumentParser) -> None:
     @param parser: the parser
     """
     parser.add_argument('files', help="the .fj files to assemble (if run-only, the .fjm file to run)", nargs='+')
+    parser.add_argument(
+        '-V',
+        '--flipjump_version',
+        action='version',
+        version=f'flipjump {FLIPJUMP_VERSION}',
+        help="show the installed flipjump version and exit",
+    )
     parser.add_argument(
         '-s', '--silent', action='store_true', help="don't show assemble & run times, and run statistics"
     )
diff --git a/flipjump/stl/hex/README.md b/flipjump/stl/hex/README.md
index 2e92c897..17b00f00 100644
--- a/flipjump/stl/hex/README.md
+++ b/flipjump/stl/hex/README.md
@@ -10,13 +10,14 @@ This folder is the table-driven counterpart to `bit/`. Where `bit/`-macros work
 | `memory.fj`             | `hex`, `vec`, `zero`, `mov`, `xor_by`, `set`, `swap`.                                             |
 | `logics.fj`             | `xor`, `or`, `and`, `not`, plus `exact_*`, `double_xor`, `quadrupled_exact_xor`.                  |
 | `math.fj`               | `add`, `sub`, `add_constant`, `add_shifted`, `add_hex_shifted_constant`, plus the `clear_carry` / `not_carry` / `set_carry` helpers for both `ns add` and `ns sub`. |
-| `math_basic.fj`         | `inc`, `dec`, `neg`, `inc1`, `dec1`, `step`, `add_count_bits`, `count_bits`, `sign_extend`.       |
+| `math_basic.fj`         | `inc`, `dec`, `neg`, `abs`, `inc1`, `dec1`, `step`, `add_count_bits`, `count_bits`, `sign_extend`. |
 | `mul.fj`                | `mul`, `mul10`, `add_mul`, plus the per-multiplication carry / init machinery.                    |
 | `div.fj`                | `div` (unsigned) and `idiv` (signed, with configurable remainder convention).                     |
 | `shifts.fj`             | `shl_hex`, `shr_hex`, plus the inline-table `shl_bit_once` / `shr_bit_once` helpers.              |
 | `cond_jumps.fj`         | `if`, `if0`, `if1`, `if_flags`, `sign`, `cmp` (3-way), `cmp_eq_next`, `min`/`max`, `cmp.init`.    |
-| `input.fj`              | `input_hex`, `input` (1 hex / n hexes), `input_as_hex`, `input_dec_uint`/`input_dec_int`.         |
+| `input.fj`              | `input_hex`, `input` (1 hex / n hexes), `input_as_hex`, `input_dec_uint`/`input_dec_int`, `input_dec_uint_until`/`input_dec_int_until`. |
 | `output.fj`             | `output`, `print`, `print_as_digit`, `print_uint`, `print_int`, `print_digit`, `print_dec_uint`, `print_dec_int`. |
+| `strings.fj`            | `input_ptr_line`, `print_ptr_text`, `print_ptr_line` (packed-byte line/text I/O), plus `fill_bytes` / `copy_bytes` block helpers. |
 | `casting.fj` *(root)*   | `bit2hex` / `hex2bit` — bridging the two namespaces.                                              |
 | `pointers/`             | The hex pointer subsystem (see below).                                                            |
 
diff --git a/flipjump/utils/constants.py b/flipjump/utils/constants.py
index 833cb9c9..505bd5d7 100644
--- a/flipjump/utils/constants.py
+++ b/flipjump/utils/constants.py
@@ -7,9 +7,15 @@
 from __future__ import annotations
 
 import lzma
+from importlib.metadata import version as _package_version, PackageNotFoundError
 from pathlib import Path
 from typing import List, Dict
 
+try:
+    FLIPJUMP_VERSION = _package_version('flipjump')
+except PackageNotFoundError:  # running from a source tree without an installed distribution
+    FLIPJUMP_VERSION = 'unknown'
+
 MACRO_SEPARATOR_STRING = "---"
 STARTING_LABEL_IN_MACROS_STRING = ':start:'
 WFLIP_LABEL_PREFIX = ':wflips:'
diff --git a/tests/unit/test_cli.py b/tests/unit/test_cli.py
index 1d6fbf6f..cf6dee6f 100644
--- a/tests/unit/test_cli.py
+++ b/tests/unit/test_cli.py
@@ -144,3 +144,14 @@ def test_cli_no_output_flag_is_gone(tmp_path: Path) -> None:
     fjm_path = assemble_to_path(HELLO_NO_STL.read_text(), tmp_path)
     with pytest.raises(SystemExit):
         assemble_run_according_to_cmd_line_args(cmd_line_args=['--run', '-s', '--no_output', str(fjm_path)])
+
+
+@pytest.mark.parametrize('flag', ['-V', '--flipjump_version'])
+def test_cli_flipjump_version_flag(flag: str, capsys: pytest.CaptureFixture[str]) -> None:
+    # -V / --flipjump_version print the package version and exit 0, before the required `files` positional.
+    from flipjump import __version__
+
+    with pytest.raises(SystemExit) as exc_info:
+        parse_arguments(cmd_line_args=[flag])
+    assert exc_info.value.code == 0
+    assert capsys.readouterr().out.strip() == f'flipjump {__version__}'