diff --git a/README.rst b/README.rst
index 3829060..856ac0f 100644
--- a/README.rst
+++ b/README.rst
@@ -36,9 +36,10 @@
 .. |Tracking| image:: https://img.shields.io/badge/issue_tracking-github-blue
         :target: https://github.com/diffpy/diffpy.apps/issues
 
-User applications to help with tasks using diffpy packages
+User applications to help with tasks using diffpy packages. Currently it
+contains
 
-* LONGER DESCRIPTION HERE
+- `runmacro`: A runner for DiffPy macro files.
 
 For more information about the diffpy.apps library, please consult our `online documentation <https://diffpy.github.io/diffpy.apps>`_.
 
@@ -63,7 +64,7 @@ To add "conda-forge" to the conda channels, run the following in a terminal. ::
 We want to install our packages in a suitable conda environment.
 The following creates and activates a new environment named ``diffpy.apps_env`` ::
 
-        conda create -n diffpy.apps_env diffpy.apps
+        conda create -n diffpy.apps_env diffpy.apps python=3.13
         conda activate diffpy.apps_env
 
 The output should print the latest version displayed on the badges above.
diff --git a/news/update-readme.rst b/news/update-readme.rst
new file mode 100644
index 0000000..3091d43
--- /dev/null
+++ b/news/update-readme.rst
@@ -0,0 +1,24 @@
+**Added:**
+
+* Also add ``diffpy.apps`` as an entry point.
+* Add ``runmacro`` in the ``README``.
+
+**Changed:**
+
+* Use ``python=3.13`` as default before ``python=3.14`` is supported by ``diffpy.cmi``.
+
+**Deprecated:**
+
+* <news item>
+
+**Removed:**
+
+* <news item>
+
+**Fixed:**
+
+* <news item>
+
+**Security:**
+
+* <news item>
diff --git a/pyproject.toml b/pyproject.toml
index 92f67cb..ce61d46 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -51,6 +51,7 @@ exclude = []  # exclude packages matching these glob patterns (empty by default)
 namespaces = false  # to disable scanning PEP 420 namespaces (true by default)
 
 [project.scripts]
+"diffpy.apps" = "diffpy.apps.apps:main"
 "diffpy.app" = "diffpy.apps.apps:main"
 
 [tool.setuptools.dynamic]
diff --git a/src/diffpy/apps/apps.py b/src/diffpy/apps/apps.py
index ef5ee44..95ae493 100644
--- a/src/diffpy/apps/apps.py
+++ b/src/diffpy/apps/apps.py
@@ -29,8 +29,8 @@ def main():
 
     parser.add_argument(
         "--version",
-        action="store_true",
-        help="Show the program's version number and exit",
+        action="version",
+        version=f"diffpy.apps {__version__}",
     )
     apps_parsers = parser.add_subparsers(
         title="Available applications",
diff --git a/src/diffpy/apps/functions.py b/src/diffpy/apps/functions.py
deleted file mode 100644
index e7e2c8e..0000000
--- a/src/diffpy/apps/functions.py
+++ /dev/null
@@ -1,31 +0,0 @@
-import numpy as np
-
-
-def dot_product(a, b):
-    """Compute the dot product of two vectors of any size.
-
-    Ensure that the inputs, a and b, are of the same size.
-    The supported types are "array_like" objects, which can
-    be converted to a NumPy array. Examples include lists and tuples.
-
-    Parameters
-    ----------
-    a : array_like
-        The first input vector.
-    b : array_like
-        The second input vector.
-
-    Returns
-    -------
-    float
-        The dot product of the two vectors.
-
-    Examples
-    --------
-    Compute the dot product of two lists:
-    >>> a = [1, 2, 3]
-    >>> b = [4, 5, 6]
-    >>> dot_product(a, b)
-    32.0
-    """
-    return float(np.dot(a, b))