diff --git a/docs/index.rst b/docs/index.rst
index 3caa343..3fc74e8 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -9,4 +9,5 @@ API Reference
    datastructures
    parsers
    simulators
+   miscellaneous
 
diff --git a/docs/miscellaneous.rst b/docs/miscellaneous.rst
new file mode 100644
index 0000000..2fe4394
--- /dev/null
+++ b/docs/miscellaneous.rst
@@ -0,0 +1,6 @@
+Miscellaneous
+=============
+
+
+.. automodule:: kyupy
+   :members:
diff --git a/src/kyupy/__init__.py b/src/kyupy/__init__.py
index 1dd07d5..2a12c78 100644
--- a/src/kyupy/__init__.py
+++ b/src/kyupy/__init__.py
@@ -1,6 +1,8 @@
 """A package for processing and analysis of non-hierarchical gate-level VLSI designs.
 
-It contains fundamental building blocks for research software in the fields of VLSI test, diagnosis and reliability.
+The kyupy package itself contains a logger and other simple utility functions.
+In addition, it defines a ``numba`` and a ``cuda`` module that point to the actual modules
+if they are available and point to mocks if numba is not installed.
 """
 
 import time
@@ -14,10 +16,12 @@ _pop_count_lut = np.asarray([bin(x).count('1') for x in range(256)])
 
 
 def popcount(a):
+    """Returns the number of 1-bits in a given packed numpy array."""
     return np.sum(_pop_count_lut[a])
 
 
 def readtext(file):
+    """Reads and returns the text in a given file. Transparently decompresses \\*.gz files."""
     if hasattr(file, 'read'):
         return file.read()
     if str(file).endswith('.gz'):
@@ -29,6 +33,7 @@ def readtext(file):
 
 
 def hr_sci(value):
+    """Formats a value in a human-readible scientific notation."""
     multiplier = 0
     while abs(value) >= 1000:
         value /= 1000
@@ -40,6 +45,7 @@ def hr_sci(value):
 
 
 def hr_bytes(nbytes):
+    """Formats a given number of bytes for human readability."""
     multiplier = 0
     while abs(nbytes) >= 1000:
         nbytes /= 1024
@@ -48,6 +54,7 @@ def hr_bytes(nbytes):
 
 
 def hr_time(seconds):
+    """Formats a given time interval for human readability."""
     s = ''
     if seconds >= 86400:
         d = seconds // 86400
@@ -68,9 +75,15 @@ def hr_time(seconds):
 
 
 class Log:
+    """A very simple logger that formats the messages with the number of seconds since
+    program start.
+    """
     def __init__(self):
         self.start = time.perf_counter()
         self.logfile = None
+        """When set to a file handle, log messages are written to it instead to standard output.
+        After each write, ``flush()`` is called as well.
+        """
 
     def log(self, level, message):
         t = time.perf_counter() - self.start
@@ -80,13 +93,21 @@ class Log:
             self.logfile.write(f'{t:011.3f} {level} {message}\n')
             self.logfile.flush()
 
-    def info(self, message): self.log('-', message)
+    def info(self, message):
+        """Log an informational message."""
+        self.log('-', message)
 
-    def warn(self, message): self.log('W', message)
+    def warn(self, message):
+        """Log a warning message."""
+        self.log('W', message)
 
-    def error(self, message): self.log('E', message)
+    def error(self, message):
+        """Log an error message."""
+        self.log('E', message)
 
     def range(self, *args):
+        """A generator that operates just like the ``range()`` built-in, and also occasionally logs the progress
+        and compute time estimates."""
         elems = len(range(*args))
         start_time = time.perf_counter()
         lastlog_time = start_time
@@ -105,6 +126,7 @@ class Log:
 
 
 log = Log()
+"""The standard logger instance."""
 
 
 #