diff --git a/auto_editor/analyze.py b/auto_editor/analyze.py
index 061c2c306..5fae2bede 100644
--- a/auto_editor/analyze.py
+++ b/auto_editor/analyze.py
@@ -37,6 +37,7 @@
     from numpy.typing import NDArray
 
     from auto_editor.ffwrapper import FileInfo
+    from auto_editor.lib.data_structs import Env
     from auto_editor.output import Ensure
     from auto_editor.utils.bar import Bar
     from auto_editor.utils.log import Log
@@ -489,9 +490,7 @@ def pixeldiff(self, s: int) -> NDArray[np.uint64]:
         return self.cache("pixeldiff", pobj, result)
 
 
-def edit_method(
-    val: str, filesetup: FileSetup, env: dict[str, Any]
-) -> NDArray[np.bool_]:
+def edit_method(val: str, filesetup: FileSetup, env: Env) -> NDArray[np.bool_]:
     assert isinstance(filesetup, FileSetup)
     src = filesetup.src
     tb = filesetup.tb
diff --git a/auto_editor/lang/palet.py b/auto_editor/lang/palet.py
index 419eafd88..21de45232 100644
--- a/auto_editor/lang/palet.py
+++ b/auto_editor/lang/palet.py
@@ -31,7 +31,6 @@
     Number = Union[int, float, complex, Fraction]
     Real = Union[int, float, Fraction]
     BoolList = NDArray[np.bool_]
-    Env = dict[str, Any]
 
 
 class ClosingError(MyError):
@@ -1108,7 +1107,7 @@ def my_eval(env: Env, node: object) -> Any:
     if type(node) is Sym:
         val = env.get(node.val)
         if val is None:
-            if mat := get_close_matches(node.val, env):
+            if mat := get_close_matches(node.val, env.data):
                 raise MyError(f"'{node.val}' not found. Did you mean: {mat[0]}")
             raise MyError(f"'{node.val}' not found.")
         return val
@@ -1157,7 +1156,9 @@ def my_eval(env: Env, node: object) -> Any:
 
     return node
 
-env: Env = {}
+
+# fmt: off
+env = Env()
 env.update({
     # constants
     "true": True,
@@ -1337,6 +1338,7 @@ def my_eval(env: Env, node: object) -> Any:
     "rename": Syntax(syn_rename),
     "delete": Syntax(syn_delete),
 })
+# fmt: on
 
 
 def interpret(env: Env, parser: Parser) -> list:
diff --git a/auto_editor/lib/data_structs.py b/auto_editor/lib/data_structs.py
index f60ed761c..e6cb1488c 100644
--- a/auto_editor/lib/data_structs.py
+++ b/auto_editor/lib/data_structs.py
@@ -2,10 +2,41 @@
 
 from fractions import Fraction
 from io import StringIO
+from typing import Any
 
 import numpy as np
 
 
+class Env:
+    __slots__ = "data"
+
+    def __init__(self) -> None:
+        self.data: dict[str, Any] = {}
+
+    def __getitem__(self, key: str) -> Any:
+        return self.data[key]
+
+    def __setitem__(self, key: str, val: Any) -> None:
+        self.data[key] = val
+
+    def __delitem__(self, key: str) -> None:
+        del self.data[key]
+
+    def __contains__(self, item: Any) -> bool:
+        return item in self.data
+
+    def update(self, my_dict: dict[str, Any]) -> None:
+        self.data.update(my_dict)
+
+    def get(self, key: str) -> Any:
+        return self.data.get(key)
+
+    def copy(self) -> Env:
+        new_env = Env()
+        new_env.update(self.data.copy())
+        return new_env
+
+
 class Sym:
     __slots__ = ("val", "hash")
 
diff --git a/auto_editor/utils/cmdkw.py b/auto_editor/utils/cmdkw.py
index 8fe6de2c9..d39fffa1d 100644
--- a/auto_editor/utils/cmdkw.py
+++ b/auto_editor/utils/cmdkw.py
@@ -3,6 +3,7 @@
 from difflib import get_close_matches
 from typing import TYPE_CHECKING, NamedTuple
 
+from auto_editor.lib.data_structs import Env
 from auto_editor.utils.types import CoerceError
 
 if TYPE_CHECKING:
@@ -103,7 +104,9 @@ def get_next_token(self) -> str | None:
         return None
 
 
-def parse_with_palet(text: str, build: pAttrs, env: dict) -> dict[str, Any]:
+def parse_with_palet(
+    text: str, build: pAttrs, _env: Env | dict[str, Any]
+) -> dict[str, Any]:
     from auto_editor.lang.palet import Lexer, Parser, interpret
     from auto_editor.lib.data_structs import print_str
     from auto_editor.lib.err import MyError
@@ -118,6 +121,11 @@ def parse_with_palet(text: str, build: pAttrs, env: dict) -> dict[str, Any]:
 
     def go(text: str, c: Any) -> Any:
         try:
+            if isinstance(_env, Env):
+                env = _env
+            else:
+                env = Env()
+                env.update(_env)
             results = interpret(env, Parser(Lexer(build.name, text)))
         except MyError as e:
             raise ParserError(e)