diff --git a/eo-phi-normalizer/app/Main.hs b/eo-phi-normalizer/app/Main.hs
index 95a7b4d2..06cf7952 100644
--- a/eo-phi-normalizer/app/Main.hs
+++ b/eo-phi-normalizer/app/Main.hs
@@ -46,8 +46,8 @@ import Language.EO.Phi.Dependencies
 import Language.EO.Phi.Metrics.Collect as Metrics (getProgramMetrics)
 import Language.EO.Phi.Metrics.Data as Metrics (ProgramMetrics (..), splitPath)
 import Language.EO.Phi.Pipeline.Config
-import Language.EO.Phi.Pipeline.Dataize.PrintConfigs
-import Language.EO.Phi.Pipeline.EOTests.PrepareTests (prepareTests)
+import Language.EO.Phi.Pipeline.Dataize.PrintConfigs as PrintConfigs
+import Language.EO.Phi.Pipeline.EOTests.PrepareTests as PrepareTests
 import Language.EO.Phi.Report.Data (makeProgramReport, makeReport)
 import Language.EO.Phi.Report.Html (reportCSS, reportJS, toStringReport)
 import Language.EO.Phi.Rules.Common
@@ -74,7 +74,7 @@ data CLI'TransformPhi = CLI'TransformPhi
   , maxDepth :: Int
   , maxGrowthFactor :: Int
   }
-  deriving (Show)
+  deriving stock (Show)
 
 data CLI'DataizePhi = CLI'DataizePhi
   { rulesPath :: Maybe String
@@ -90,38 +90,44 @@ data CLI'DataizePhi = CLI'DataizePhi
   , disabledAtomNames :: [String]
   , enabledAtomNames :: [String]
   }
-  deriving (Show)
+  deriving stock (Show)
 
 data CLI'MetricsPhi = CLI'MetricsPhi
   { inputFile :: Maybe FilePath
   , outputFile :: Maybe FilePath
   , bindingsPath :: Maybe String
   }
-  deriving (Show)
+  deriving stock (Show)
 
-newtype CLI'ReportPhi = CLI'ReportPhi
+newtype CLI'Pipeline'Report = CLI'Pipeline'Report
   { configFile :: FilePath
   }
-  deriving (Show)
+  deriving stock (Show)
+
+newtype CLI'Pipeline'PrepareTests = CLI'Pipeline'PrepareTests
+  { configFile :: FilePath
+  }
+  deriving stock (Show)
+
+data CLI'Pipeline'PrintDataizeConfigs = CLI'Pipeline'PrintDataizeConfigs
+  { configFile :: FilePath
+  , phiPrefixesToStrip :: [FilePath]
+  , singleLine :: Bool
+  }
+  deriving stock (Show)
 
 data CLI'Pipeline
-  = CLI'Pipeline'PrepareTests
-      { configFile :: FilePath
-      }
-  | CLI'Pipeline'PrintDataizeConfigs
-      { configFile :: FilePath
-      , phiPrefixesToStrip :: [FilePath]
-      , singleLine :: Bool
-      }
-  deriving (Show)
+  = CLI'Pipeline'Report' CLI'Pipeline'Report
+  | CLI'Pipeline'PrepareTests' CLI'Pipeline'PrepareTests
+  | CLI'Pipeline'PrintDataizeConfigs' CLI'Pipeline'PrintDataizeConfigs
+  deriving stock (Show)
 
 data CLI
   = CLI'TransformPhi' CLI'TransformPhi
   | CLI'DataizePhi' CLI'DataizePhi
   | CLI'MetricsPhi' CLI'MetricsPhi
-  | CLI'ReportPhi' CLI'ReportPhi
   | CLI'Pipeline' CLI'Pipeline
-  deriving (Show)
+  deriving stock (Show)
 
 data MetavarName = MetavarName
   { file :: String
@@ -204,14 +210,18 @@ bindingsPathOption =
                 |]
       )
 
+data CommandParser'Pipeline = CommandParser'Pipeline
+  { report :: Parser CLI'Pipeline'Report
+  , prepareTests :: Parser CLI'Pipeline'PrepareTests
+  , printDataizeConfigs :: Parser CLI'Pipeline'PrintDataizeConfigs
+  }
+
 data CommandParser = CommandParser
   { metrics :: Parser CLI'MetricsPhi
   , transform :: Parser CLI'TransformPhi
   , dataize :: Parser CLI'DataizePhi
-  , report :: Parser CLI'ReportPhi
   , pipeline :: Parser CLI'Pipeline
-  , pipelinePrepareTests :: Parser CLI'Pipeline
-  , pipelinePrintDataizeConfigs :: Parser CLI'Pipeline
+  , pipeline' :: CommandParser'Pipeline
   }
 
 commandParser :: CommandParser
@@ -251,34 +261,42 @@ commandParser =
     latex <- latexSwitch
     asPackage <- asPackageSwitch
     minimizeStuckTerms <- minimizeStuckTermsSwitch
-    disabledAtomNames <- many $ strOption (long "disable-atom" <> metavar.atomName <> help "Disable a particular atom by its name.")
-    enabledAtomNames <- many $ strOption (long "enable-atom" <> metavar.atomName <> help "Enable a particular atom by its name.")
+    disabledAtomNames <- many $ strOption (long "disable-atom" <> metavar.atomName <> help "Name of an atom to disable.")
+    enabledAtomNames <- many $ strOption (long "enable-atom" <> metavar.atomName <> help "Name of an atom to enable.")
     pure CLI'DataizePhi{..}
-  report = do
-    configFile <- strOption (long "config" <> short 'c' <> metavar.file <> help [fmt|A report configuration {metavarName.file}.|])
-    pure CLI'ReportPhi{..}
-  pipelinePrepareTests = do
-    configFile <- strOption (long "config" <> short 'c' <> metavar.file <> help [fmt|A pipeline tests configuration {metavarName.file}.|])
-    pure CLI'Pipeline'PrepareTests{..}
-  pipelinePrintDataizeConfigs = do
-    configFile <- strOption (long "config" <> short 'c' <> metavar.file <> help [fmt|A pipeline tests configuration {metavarName.file}.|])
-    phiPrefixesToStrip <- many $ strOption (long "strip-phi-prefix" <> short 'p' <> metavar.atomName <> help "Remove prefixes in PHI file paths.")
-    singleLine <- switch (long "single-line" <> short 'l' <> help [fmt|Output configs on an single line.|])
-    pure CLI'Pipeline'PrintDataizeConfigs{..}
+  pipeline' =
+    CommandParser'Pipeline
+      { report = do
+          configFile <- strOption (long "config" <> short 'c' <> metavar.file <> help [fmt|A report configuration {metavarName.file}.|])
+          pure CLI'Pipeline'Report{..}
+      , prepareTests = do
+          configFile <- strOption (long "config" <> short 'c' <> metavar.file <> help [fmt|A pipeline tests configuration {metavarName.file}.|])
+          pure CLI'Pipeline'PrepareTests{..}
+      , printDataizeConfigs = do
+          configFile <- strOption (long "config" <> short 'c' <> metavar.file <> help [fmt|A pipeline tests configuration {metavarName.file}.|])
+          phiPrefixesToStrip <- many $ strOption (long "strip-phi-prefix" <> short 'p' <> metavar.path <> help [fmt|{metavarName.path} prefix to remove in PHI file paths.|])
+          singleLine <- switch (long "single-line" <> short 'l' <> help [fmt|Output configs on an single line.|])
+          pure CLI'Pipeline'PrintDataizeConfigs{..}
+      }
   pipeline =
     hsubparser
-      ( command commandNames.pipelinePrepareTests commandParserInfo.pipelinePrepareTests
-          <> command commandNames.pipelinePrintDataizeConfigs commandParserInfo.pipelinePrintDataizeConfigs
+      ( command commandNames.pipeline'.report commandParserInfo.pipeline'.report
+          <> command commandNames.pipeline'.prepareTests commandParserInfo.pipeline'.prepareTests
+          <> command commandNames.pipeline'.printDataizeConfigs commandParserInfo.pipeline'.printDataizeConfigs
       )
 
+data CommandParserInfo'Pipeline = CommandParserInfo'Pipeline
+  { report :: ParserInfo CLI'Pipeline
+  , prepareTests :: ParserInfo CLI'Pipeline
+  , printDataizeConfigs :: ParserInfo CLI'Pipeline
+  }
+
 data CommandParserInfo = CommandParserInfo
   { metrics :: ParserInfo CLI
   , transform :: ParserInfo CLI
   , dataize :: ParserInfo CLI
-  , report :: ParserInfo CLI
   , pipeline :: ParserInfo CLI
-  , pipelinePrepareTests :: ParserInfo CLI'Pipeline
-  , pipelinePrintDataizeConfigs :: ParserInfo CLI'Pipeline
+  , pipeline' :: CommandParserInfo'Pipeline
   }
 
 commandParserInfo :: CommandParserInfo
@@ -287,20 +305,27 @@ commandParserInfo =
     { metrics = info (CLI'MetricsPhi' <$> commandParser.metrics) (progDesc "Collect metrics for a PHI program.")
     , transform = info (CLI'TransformPhi' <$> commandParser.transform) (progDesc "Transform a PHI program.")
     , dataize = info (CLI'DataizePhi' <$> commandParser.dataize) (progDesc "Dataize a PHI program.")
-    , report = info (CLI'ReportPhi' <$> commandParser.report) (progDesc "Generate reports about initial and normalized PHI programs.")
     , pipeline = info (CLI'Pipeline' <$> commandParser.pipeline) (progDesc "Run pipeline-related commands.")
-    , pipelinePrepareTests = info commandParser.pipelinePrepareTests (progDesc "Prepare EO test files for the pipeline.")
-    , pipelinePrintDataizeConfigs = info commandParser.pipelinePrintDataizeConfigs (progDesc "Print configs for the `normalizer dataize` command.")
+    , pipeline' =
+        CommandParserInfo'Pipeline
+          { report = info (CLI'Pipeline'Report' <$> commandParser.pipeline'.report) (progDesc "Generate reports about initial and normalized PHI programs.")
+          , prepareTests = info (CLI'Pipeline'PrepareTests' <$> commandParser.pipeline'.prepareTests) (progDesc "Prepare EO test files for the pipeline.")
+          , printDataizeConfigs = info (CLI'Pipeline'PrintDataizeConfigs' <$> commandParser.pipeline'.printDataizeConfigs) (progDesc [fmt|Print configs for the `normalizer {commandNames.dataize}` command.|])
+          }
     }
 
+data CommandNames'Pipeline = CommandNames'Pipeline
+  { report :: String
+  , prepareTests :: String
+  , printDataizeConfigs :: String
+  }
+
 data CommandNames = CommandNames
   { transform :: String
   , metrics :: String
   , dataize :: String
-  , report :: String
   , pipeline :: String
-  , pipelinePrepareTests :: String
-  , pipelinePrintDataizeConfigs :: String
+  , pipeline' :: CommandNames'Pipeline
   }
 
 commandNames :: CommandNames
@@ -309,10 +334,13 @@ commandNames =
     { transform = "transform"
     , metrics = "metrics"
     , dataize = "dataize"
-    , report = "report"
     , pipeline = "pipeline"
-    , pipelinePrepareTests = "prepare-tests"
-    , pipelinePrintDataizeConfigs = "print-dataize-configs"
+    , pipeline' =
+        CommandNames'Pipeline
+          { report = "report"
+          , prepareTests = "prepare-tests"
+          , printDataizeConfigs = "print-dataize-configs"
+          }
     }
 
 cli :: Parser CLI
@@ -321,7 +349,6 @@ cli =
     ( command commandNames.transform commandParserInfo.transform
         <> command commandNames.metrics commandParserInfo.metrics
         <> command commandNames.dataize commandParserInfo.dataize
-        <> command commandNames.report commandParserInfo.report
         <> command commandNames.pipeline commandParserInfo.pipeline
     )
 
@@ -601,7 +628,7 @@ main = withUtf8 do
                     | otherwise = obj'
                in logStrLn (printAsProgramOrAsObject obj'')
             Right (Bytes bytes) -> logStrLn bytes
-    CLI'ReportPhi' CLI'ReportPhi{..} -> do
+    CLI'Pipeline' (CLI'Pipeline'Report' CLI'Pipeline'Report{..}) -> do
       pipelineConfig <- decodeFileThrow @_ @PipelineConfig configFile
       let testSets = filter (fromMaybe True . (.enable)) pipelineConfig.testSets
       programReports <- forM (zip [1 ..] testSets) $ \(index :: Int, (.phi) -> testSet) -> do
@@ -631,9 +658,9 @@ main = withUtf8 do
         $ \(path, reportString) -> do
           createDirectoryIfMissing True (takeDirectory path)
           writeFile path reportString
-    CLI'Pipeline' CLI'Pipeline'PrepareTests{..} -> do
+    CLI'Pipeline' (CLI'Pipeline'PrepareTests' CLI'Pipeline'PrepareTests{..}) -> do
       config <- decodeFileThrow @_ @PipelineConfig configFile
-      prepareTests config
-    CLI'Pipeline' CLI'Pipeline'PrintDataizeConfigs{..} -> do
+      PrepareTests.prepareTests config
+    CLI'Pipeline' (CLI'Pipeline'PrintDataizeConfigs' CLI'Pipeline'PrintDataizeConfigs{..}) -> do
       config <- decodeFileThrow @_ @PipelineConfig configFile
-      printDataizeConfigs config phiPrefixesToStrip singleLine
+      PrintConfigs.printDataizeConfigs config phiPrefixesToStrip singleLine
diff --git a/scripts/pipeline.sh b/scripts/pipeline.sh
index 69c38e62..97064425 100755
--- a/scripts/pipeline.sh
+++ b/scripts/pipeline.sh
@@ -175,7 +175,7 @@ function generate_report {
 
     cd "$PWD_DIR"
 
-    normalizer report --config "$PIPELINE_CONFIG_FILE"
+    normalizer pipeline report --config "$PIPELINE_CONFIG_FILE"
 }
 
 function convert_normalized_phi_to_eo {
diff --git a/site/docs/src/SUMMARY.md b/site/docs/src/SUMMARY.md
index c85e9479..2aeeb951 100644
--- a/site/docs/src/SUMMARY.md
+++ b/site/docs/src/SUMMARY.md
@@ -8,6 +8,8 @@
   - [normalizer transform](./normalizer/transform.md)
   - [normalizer dataize](./normalizer/dataize.md)
   - [normalizer metrics](./normalizer/metrics.md)
-  - [normalizer report](./normalizer/report.md)
   - [normalizer pipeline](./normalizer/pipeline.md)
+    - [normalizer pipeline prepare-tests](./normalizer/pipeline/prepare-tests.md)
+    - [normalizer pipeline prepare-pipeline-configs](./normalizer/pipeline/print-dataize-configs.md)
+    - [normalizer pipeline report](./normalizer/pipeline/report.md)
 - [Contributing](./contributing.md)
diff --git a/site/docs/src/media/phi-grammar.png b/site/docs/src/media/phi-grammar.png
index 02aafb6a..326c5455 100644
Binary files a/site/docs/src/media/phi-grammar.png and b/site/docs/src/media/phi-grammar.png differ
diff --git a/site/docs/src/normalizer/pipeline.md b/site/docs/src/normalizer/pipeline.md
index 0eebf2cc..31e101b0 100644
--- a/site/docs/src/normalizer/pipeline.md
+++ b/site/docs/src/normalizer/pipeline.md
@@ -1,21 +1,3 @@
 # `normalizer pipeline`
 
-This command is used in the [pipeline](./pipeline.md) script.
-
-## `normalizer pipeline print-dataize-configs`
-
-This commands reads the [pipeline configuration](../pipeline.md#pipeline-configuration) and prints configurations for the [normalizer dataize](./dataize.md).
-
-```sh
-source scripts/lib.sh
-normalizer pipeline print-dataize-configs --single-line --strip-phi-prefix "$PIPELINE_PHI_INITIAL_DIR_RELATIVE/" --config "$PIPELINE_CONFIG_FILE"
-```
-
-## `normalizer pipeline prepare-tests`
-
-This command reads the [pipeline configuration](../pipeline.md#pipeline-configuration), reads `original` EO files, filters tests there, and writes them to `filtered` and `yaml` files.
-
-```sh
-source scripts/lib.sh
-normalizer pipeline prepare-tests --config "$PIPELINE_CONFIG_FILE"
-```
+This command is used in the [pipeline](../pipeline.md) script.
diff --git a/site/docs/src/normalizer/pipeline/prepare-tests.md b/site/docs/src/normalizer/pipeline/prepare-tests.md
new file mode 100644
index 00000000..a84ec0c7
--- /dev/null
+++ b/site/docs/src/normalizer/pipeline/prepare-tests.md
@@ -0,0 +1,10 @@
+# `normalizer pipeline prepare-tests`
+
+## `--config`
+
+This command reads the [pipeline configuration](../pipeline.md#pipeline-configuration), reads `original` EO files, filters tests there, and writes them to `filtered` and `yaml` files.
+
+```sh
+source scripts/lib.sh
+normalizer pipeline prepare-tests --config "$PIPELINE_CONFIG_FILE"
+```
diff --git a/site/docs/src/normalizer/pipeline/print-dataize-configs.md b/site/docs/src/normalizer/pipeline/print-dataize-configs.md
new file mode 100644
index 00000000..c6f5311e
--- /dev/null
+++ b/site/docs/src/normalizer/pipeline/print-dataize-configs.md
@@ -0,0 +1,10 @@
+# `normalizer pipeline print-dataize-configs`
+
+## `--config`, `--single-line`, `--strip-phi-prefix`
+
+This commands reads the [pipeline configuration](../../pipeline.md#pipeline-configuration) and prints configurations for the [normalizer dataize](../dataize.md).
+
+```sh
+source scripts/lib.sh
+normalizer pipeline print-dataize-configs --single-line --strip-phi-prefix "$PIPELINE_PHI_INITIAL_DIR_RELATIVE/" --config "$PIPELINE_CONFIG_FILE"
+```
diff --git a/site/docs/src/normalizer/pipeline/report.md b/site/docs/src/normalizer/pipeline/report.md
new file mode 100644
index 00000000..6503bee9
--- /dev/null
+++ b/site/docs/src/normalizer/pipeline/report.md
@@ -0,0 +1,51 @@
+# `normalizer pipeline report`
+
+## Reports
+
+The `normalizer pipeline report` command generates reports about initial and normalized `PHI` programs.
+
+The reports contain detailed information about metrics collected for these programs.
+
+The reports are in `HTML`, `GitHub Flavored Markdown`, and `JSON` formats.
+
+## Environment
+
+The command requires that there are:
+
+- Initial `PHI` programs
+- Normalized `PHI` programs
+- A report configuration file
+
+### `PHI` programs
+
+Currently, we translate `EO` programs and get initial `PHI` programs.
+
+Next, we normalize these `PHI` programs and get normalized `PHI` programs.
+
+### Report configuration
+
+The report configuration is stored in the `report` object in the [pipeline configuration file](../pipeline.md#pipeline-configuration).
+
+## CLI
+
+### `--help`
+
+```$ as console
+normalizer pipeline report --help
+```
+
+```console
+Usage: normalizer pipeline report (-c|--config FILE)
+
+  Generate reports about initial and normalized PHI programs.
+
+Available options:
+  -c,--config FILE         The FILE with a report configuration.
+  -h,--help                Show this help text
+```
+
+### `--config`
+
+```$ as console
+normalizer pipeline report --config pipeline/config.yaml
+```
diff --git a/site/docs/src/normalizer/report.md b/site/docs/src/normalizer/report.md
deleted file mode 100644
index c669f862..00000000
--- a/site/docs/src/normalizer/report.md
+++ /dev/null
@@ -1,89 +0,0 @@
-# `normalizer report`
-
-## Reports
-
-The `report` command generates reports about initial and normalized `PHI` programs.
-
-The reports contain detailed information about metrics collected for these programs.
-
-The reports are in `HTML`, `GitHub Flavored Markdown`, and `JSON` formats.
-
-## Environment
-
-The command requires that there are:
-
-- Initial `PHI` programs
-- Normalized `PHI` programs
-- A report configuration file
-
-### `PHI` programs
-
-Currently, we translate `EO` programs and get initial `PHI` programs.
-
-Next, we normalize these `PHI` programs and get normalized `PHI` programs.
-
-### Report configuration file
-
-A report configuration file has several attributes:
-
-- `input`
-  - `js` - Optional path to a `JavaScript` file that should be inlined into an `HTML` report.
-    - If no path is specified, `normalizer` will use `report/main.js` from the `eo-phi-normalizer` package.
-  - `css` - Optional path to a `CSS` file that should be inlined into an `HTML` report.
-    - If no path is specified, `normalizer` will use `report/styles.css` from the `eo-phi-normalizer` package.
-- `output`
-  - `html` - Optional path to an `HTML` report.
-    - If no path is specified, the `HTML` report won't be generated.
-  - `json` - Optional path to a `JSON` report.
-    - If no path is specified, the `JSON` report won't be generated.
-  - `markdown` - Optional path to a `GitHub Flavored Markdown` report.
-    - If no path is specified, the `GitHub Flavored Markdown` report won't be generated.
-- `expected-metrics-change` - Specifies expected changes of metrics for normalized `PHI` programs relative to the initial `PHI` programs. Values represent `(metric_initial - metric_normalized) / metric_ initial`. Attributes:
-  - `dataless`
-  - `applications`
-  - `formations`
-  - `dispatches`
-- `items`
-  - `phi` - path to an initial `PHI` program.
-  - `phi-normalized` - path to a normalized `PHI` program.
-    - The normalized `PHI` program should correspond to the initial `PHI` program.
-  - `bindings-path-phi` - path to bindings of a formation in the initial `PHI` program.
-    - `org.eolang` corresponds to a formation `Φ.org.eolang`.
-  - `bindings-path-phi-normalized` - path to bindings of a formation in the normalized `PHI` program.
-    - `org.eolang` corresponds to a formation `Φ.org.eolang`.
-
-#### Sample report configuration file
-
-The `normalizer` repository contains the `report/config.yaml` report configuration file.
-
-<details>
-
-<summary>Click to view the file</summary>
-
-```yaml
-{{#include ../../../../report/config.yaml}}
-```
-
-</details>
-
-## CLI
-
-### `--help`
-
-```$ as console
-normalizer report --help
-```
-
-```console
-Usage: normalizer report (-c|--config FILE)
-
-  Generate reports about initial and normalized PHI programs.
-
-Available options:
-  -c,--config FILE         The FILE with a report configuration.
-  -h,--help                Show this help text
-```
-
-### `--config`
-
-Provide a report configuration file (see [Report configuration file](#report-configuration-file)).