diff --git a/map_machine/moire_manager.py b/map_machine/moire_manager.py
index 4de1937..659ea81 100644
--- a/map_machine/moire_manager.py
+++ b/map_machine/moire_manager.py
@@ -11,7 +11,7 @@ from moire.moire import Tag
 
 from map_machine import ui
 from map_machine.icon import ShapeExtractor
-from map_machine.ui import COMMANDS
+from map_machine.ui import COMMAND_LINES
 from map_machine.workspace import workspace
 
 __author__ = "Sergey Vartanov"
@@ -143,7 +143,7 @@ class MapMachineMoire(Default, ABC):
 
     def command(self, args: Arguments) -> str:
         """Bash command from integration tests."""
-        return "map-machine " + " ".join(COMMANDS[self.clear(args[0])])
+        return "map-machine " + " ".join(COMMAND_LINES[self.clear(args[0])])
 
     def icon(self, args: Arguments) -> str:
         """Image with Röntgen icon."""
diff --git a/map_machine/ui.py b/map_machine/ui.py
index 3f1510c..b5a45d7 100644
--- a/map_machine/ui.py
+++ b/map_machine/ui.py
@@ -14,7 +14,7 @@ __email__ = "me@enzet.ru"
 BOXES: str = " ▏▎▍▌▋▊▉"
 BOXES_LENGTH: int = len(BOXES)
 
-COMMANDS: dict[str, list[str]] = {
+COMMAND_LINES: dict[str, list[str]] = {
     "render": ["render", "-b", "10.000,20.000,10.001,20.001"],
     "render_with_tooltips": [
         "render",
@@ -27,6 +27,15 @@ COMMANDS: dict[str, list[str]] = {
     "element": ["element", "--node", "amenity=bench,material=wood"],
     "tile": ["tile", "--coordinates", "50.000,40.000"],
 }
+COMMANDS: list[str] = [
+    "render",
+    "server",
+    "tile",
+    "element",
+    "mapcss",
+    "icons",
+    "taginfo",
+]
 
 
 def parse_arguments(args: list[str]) -> argparse.Namespace:
@@ -163,7 +172,7 @@ def add_tile_arguments(parser: argparse.ArgumentParser) -> None:
     parser.add_argument(
         "-b",
         "--boundary-box",
-        help="construct the minimum amount of tiles that cover requested "
+        help="construct the minimum amount of tiles that cover the requested "
         "boundary box",
         metavar="<lon1>,<lat1>,<lon2>,<lat2>",
     )
@@ -181,7 +190,7 @@ def add_tile_arguments(parser: argparse.ArgumentParser) -> None:
         "--input",
         dest="input_file_name",
         metavar="<path>",
-        help="input OSM XML file name (if not specified, file will be "
+        help="input OSM XML file name (if not specified, the file will be "
         "downloaded using OpenStreetMap API)",
     )
 
@@ -233,8 +242,8 @@ def add_render_arguments(parser: argparse.ArgumentParser) -> None:
         "-b",
         "--boundary-box",
         metavar="<lon1>,<lat1>,<lon2>,<lat2>",
-        help="geo boundary box; if first value is negative, enclose the value "
-        "with quotes and use space before `-`",
+        help="geo boundary box; if the first value is negative, enclose the "
+        "value with quotes and use space before `-`",
     )
     parser.add_argument(
         "--cache",
diff --git a/tests/test_command_line.py b/tests/test_command_line.py
index 6da6104..81f624f 100644
--- a/tests/test_command_line.py
+++ b/tests/test_command_line.py
@@ -10,7 +10,7 @@ __email__ = "me@enzet.ru"
 from xml.etree import ElementTree
 from xml.etree.ElementTree import Element
 
-from map_machine.ui import COMMANDS
+from map_machine.ui import COMMAND_LINES
 
 
 def error_run(arguments: list[str], message: bytes) -> None:
@@ -41,7 +41,7 @@ def test_wrong_render_arguments() -> None:
 def test_render() -> None:
     """Test `render` command."""
     run(
-        COMMANDS["render"] + ["--cache", "tests/data"],
+        COMMAND_LINES["render"] + ["--cache", "tests/data"],
         b"INFO Writing output SVG to out/map.svg...\n",
     )
     with Path("out/map.svg").open() as output_file:
@@ -58,7 +58,7 @@ def test_render() -> None:
 def test_render_with_tooltips() -> None:
     """Test `render` command."""
     run(
-        COMMANDS["render_with_tooltips"] + ["--cache", "tests/data"],
+        COMMAND_LINES["render_with_tooltips"] + ["--cache", "tests/data"],
         b"INFO Writing output SVG to out/map.svg...\n",
     )
     with Path("out/map.svg").open() as output_file:
@@ -76,7 +76,7 @@ def test_render_with_tooltips() -> None:
 def test_icons() -> None:
     """Test `icons` command."""
     run(
-        COMMANDS["icons"],
+        COMMAND_LINES["icons"],
         b"INFO Icon grid is written to out/icon_grid.svg.\n"
         b"INFO Icons are written to out/icons_by_name and out/icons_by_id.\n",
     )
@@ -91,7 +91,7 @@ def test_icons() -> None:
 def test_mapcss() -> None:
     """Test `mapcss` command."""
     run(
-        COMMANDS["mapcss"],
+        COMMAND_LINES["mapcss"],
         b"INFO MapCSS 0.2 scheme is written to out/map_machine_mapcss.\n",
     )
 
@@ -105,15 +105,17 @@ def test_mapcss() -> None:
 
 def test_element() -> None:
     """Test `element` command."""
-    run(COMMANDS["element"], b"INFO Element is written to out/element.svg.\n")
-
+    run(
+        COMMAND_LINES["element"],
+        b"INFO Element is written to out/element.svg.\n",
+    )
     assert (Path("out") / "element.svg").is_file()
 
 
 def test_tile() -> None:
     """Test `tile` command."""
     run(
-        COMMANDS["tile"] + ["--cache", "tests/data"],
+        COMMAND_LINES["tile"] + ["--cache", "tests/data"],
         b"INFO Tile is drawn to out/tiles/tile_18_160199_88904.svg.\n"
         b"INFO SVG file is rasterized to out/tiles/tile_18_160199_88904.png.\n",
     )