diff --git a/tivars/types/gdb.py b/tivars/types/gdb.py
index ba3507f..43df93b 100644
--- a/tivars/types/gdb.py
+++ b/tivars/types/gdb.py
@@ -14,6 +14,10 @@
 
 
 class GraphMode(Flags):
+    """
+    Flags for GDB graph modes
+    """
+
     Dot = {0: 1}
     Connected = {0: 0}
     Simul = {1: 1}
@@ -42,6 +46,10 @@ class GraphMode(Flags):
 
 
 class SeqMode(Flags):
+    """
+    Flags for sequential GDB plot modes
+    """
+
     Time = {0: 0, 1: 0, 2: 0, 3: 0, 4: 0}
     Web = {0: 1, 1: 0, 2: 0, 3: 0, 4: 0}
     VertWeb = {0: 0, 1: 1, 2: 0, 3: 0, 4: 0}
@@ -51,6 +59,10 @@ class SeqMode(Flags):
 
 
 class GraphStyle(Enum):
+    """
+    Enum of GDB graph styles
+    """
+
     SolidLine = b'\x00'
     ThickLine = b'\x01'
     ShadeAbove = b'\x02'
@@ -64,6 +76,10 @@ class GraphStyle(Enum):
 
 
 class GraphColor(Enum):
+    """
+    Enum of GDB graph colors
+    """
+
     Mono = b'\x00'
     Blue = b'\x01'
     Red = b'\x02'
@@ -87,6 +103,10 @@ class GraphColor(Enum):
 
 
 class GlobalLineStyle(Enum):
+    """
+    Enum of global GDB line styles
+    """
+
     Thick = b'\x00'
     DotThick = b'\x01'
     Thin = b'\x02'
@@ -97,6 +117,10 @@ class GlobalLineStyle(Enum):
 
 
 class BorderColor(Enum):
+    """
+    Enum of GDB graph border colors
+    """
+
     LtGray = b'\x01'
     Teal = b'\x02'
     LtBlue = b'\x03'
@@ -107,6 +131,10 @@ class BorderColor(Enum):
 
 
 class EquationFlags(Flags):
+    """
+    Flags for equations stored in GDBs
+    """
+
     Selected = {5: 1}
     Deselected = {5: 0}
     UsedForGraph = {6: 1}
@@ -116,6 +144,13 @@ class EquationFlags(Flags):
 
 
 class TIGraphedEquation(TIEquation):
+    """
+    Parser for equations stored in GDBs
+
+    A `TIGraphedEquation` is a `TIEquation` with an extra leading flag byte.
+    The equation's style and color in its GDB is bundled for convenience.
+    """
+
     min_data_length = 3
 
     class Raw(TIEntry.Raw):
@@ -642,6 +677,13 @@ def coerce(self):
 
 
 class TIGDB(TIMonoGDB):
+    """
+    Base class for all color GDB entries
+
+    A GDB is a collection of equations and graph settings representing the state of one of the equation plotters.
+    A GDB can correspond to one of the Function, Parametric, Polar, or Sequence plotting modes.
+    """
+
     min_data_length = 66
     has_color = True
 
diff --git a/tivars/types/list.py b/tivars/types/list.py
index 5ce615c..f61bff1 100644
--- a/tivars/types/list.py
+++ b/tivars/types/list.py
@@ -194,6 +194,10 @@ def string(self) -> str:
 
 
 class TIRealList(ListEntry, register=True):
+    """
+    Parser for lists of real numbers
+    """
+
     _E = RealEntry
 
     extensions = {
@@ -207,6 +211,10 @@ class TIRealList(ListEntry, register=True):
 
 
 class TIComplexList(ListEntry, register=True):
+    """
+    Parser for lists of complex numbers
+    """
+
     _E = ComplexEntry
 
     extensions = {
diff --git a/tivars/types/tokenized.py b/tivars/types/tokenized.py
index c15840c..cb964e3 100644
--- a/tivars/types/tokenized.py
+++ b/tivars/types/tokenized.py
@@ -237,7 +237,7 @@ class TINewEquation(TIEquation, register=True):
     """
     Parser for internal equations
 
-    A `TINewEquation` is simply a `TIEquation` with certain internal uses
+    A `TINewEquation` is simply a `TIEquation` with certain internal uses.
     """
 
     _type_id = 0x0B