diff --git a/src/uu/comm/comm.md b/src/uu/comm/comm.md
new file mode 100644
index 000000000..91f4467d4
--- /dev/null
+++ b/src/uu/comm/comm.md
@@ -0,0 +1,13 @@
+# comm
+
+```
+comm [OPTION]... FILE1 FILE2
+```
+
+Compare two sorted files line by line.
+
+When FILE1 or FILE2 (not both) is -, read standard input.
+
+With no options, produce three-column output. Column one contains
+lines unique to FILE1, column two contains lines unique to FILE2,
+and column three contains lines common to both files.
diff --git a/src/uu/comm/src/comm.rs b/src/uu/comm/src/comm.rs
index c14717df2..3bc45b6a5 100644
--- a/src/uu/comm/src/comm.rs
+++ b/src/uu/comm/src/comm.rs
@@ -13,13 +13,12 @@ use std::io::{self, stdin, BufRead, BufReader, Stdin};
 use std::path::Path;
 use uucore::error::FromIo;
 use uucore::error::UResult;
-use uucore::format_usage;
+use uucore::{format_usage, help_about, help_usage};
 
 use clap::{crate_version, Arg, ArgAction, ArgMatches, Command};
 
-static ABOUT: &str = "Compare two sorted files line by line";
-static LONG_HELP: &str = "";
-const USAGE: &str = "{} [OPTION]... FILE1 FILE2";
+const ABOUT: &str = help_about!("comm.md");
+const USAGE: &str = help_usage!("comm.md");
 
 mod options {
     pub const COLUMN_1: &str = "1";
@@ -160,7 +159,6 @@ pub fn uu_app() -> Command {
     Command::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
-        .after_help(LONG_HELP)
         .override_usage(format_usage(USAGE))
         .infer_long_args(true)
         .arg(
diff --git a/src/uu/dirname/dirname.md b/src/uu/dirname/dirname.md
new file mode 100644
index 000000000..f08c1c4c9
--- /dev/null
+++ b/src/uu/dirname/dirname.md
@@ -0,0 +1,12 @@
+# dirname
+
+```
+dirname [OPTION] NAME...
+```
+
+Strip last component from file name
+
+## After Help
+
+Output each NAME with its last non-slash component and trailing slashes
+removed; if NAME contains no /'s, output '.' (meaning the current directory).
diff --git a/src/uu/dirname/src/dirname.rs b/src/uu/dirname/src/dirname.rs
index bebdd4d36..687aaa550 100644
--- a/src/uu/dirname/src/dirname.rs
+++ b/src/uu/dirname/src/dirname.rs
@@ -9,13 +9,11 @@ use clap::{crate_version, Arg, ArgAction, Command};
 use std::path::Path;
 use uucore::display::print_verbatim;
 use uucore::error::{UResult, UUsageError};
-use uucore::format_usage;
+use uucore::{format_usage, help_about, help_section, help_usage};
 
-const ABOUT: &str = "Strip last component from file name";
-const USAGE: &str = "{} [OPTION] NAME...";
-const LONG_USAGE: &str = "\
-    Output each NAME with its last non-slash component and trailing slashes \n\
-    removed; if NAME contains no /'s, output '.' (meaning the current directory).";
+const ABOUT: &str = help_about!("dirname.md");
+const USAGE: &str = help_usage!("dirname.md");
+const AFTER_HELP: &str = help_section!("after help", "dirname.md");
 
 mod options {
     pub const ZERO: &str = "zero";
@@ -26,7 +24,7 @@ mod options {
 pub fn uumain(args: impl uucore::Args) -> UResult<()> {
     let args = args.collect_lossy();
 
-    let matches = uu_app().after_help(LONG_USAGE).try_get_matches_from(args)?;
+    let matches = uu_app().after_help(AFTER_HELP).try_get_matches_from(args)?;
 
     let separator = if matches.get_flag(options::ZERO) {
         "\0"
diff --git a/util/size-experiment.py b/util/size-experiment.py
new file mode 100644
index 000000000..8acacf9d1
--- /dev/null
+++ b/util/size-experiment.py
@@ -0,0 +1,90 @@
+import subprocess
+from itertools import product
+import shutil
+import os
+from collections import defaultdict
+from pprint import pprint
+
+# Set to false if you've only changed the analysis and do not want to recompile
+# the binaries.
+RECOMPILE = True
+
+STRIP_VALS = ["none", "debuginfo", "symbols"]
+PANIC_VALS = ["unwind", "abort"]
+OPT_LEVEL_VALS = [3, "s", "z"]
+LTO_VALS = ["off", "thin", "fat"]
+
+
+def config(name, val):
+    return ["--config", f"profile.release.{name}={val!r}"]
+
+
+sizes = {}
+
+for (strip, panic, opt, lto) in product(
+    STRIP_VALS, PANIC_VALS, OPT_LEVEL_VALS, LTO_VALS
+):
+    if RECOMPILE:
+        cmd = [
+            "cargo",
+            "build",
+            "--release",
+            "--features=unix",
+            *config("strip", strip),
+            *config("panic", panic),
+            *config("opt-level", opt),
+            *config("lto", lto),
+        ]
+        print("RUN:", " ".join(cmd))
+        res = subprocess.call(cmd)
+
+        shutil.copyfile(
+            "target/release/coreutils",
+            "-".join(["coreutils", strip, panic, str(opt), lto]),
+        )
+        print(res)
+
+    sizes[(strip, panic, opt, lto)] = os.path.getsize(
+        "-".join(["coreutils", strip, panic, str(opt), lto])
+    )
+
+changes_absolute = defaultdict(list)
+changes_percent = defaultdict(list)
+
+
+def with_val_at_idx(val, idx, other):
+    other = list(other)
+    other.insert(idx, val)
+    return tuple(other)
+
+
+def collect_diff(idx, name):
+    all_params = [STRIP_VALS, PANIC_VALS, OPT_LEVEL_VALS, LTO_VALS]
+    vals = all_params.pop(idx)
+    for other in product(*all_params):
+        baseline = sizes[with_val_at_idx(vals[0], idx, other)]
+        for val in vals[1:]:
+            changes = sizes[with_val_at_idx(val, idx, other)] - baseline
+            changes_absolute[f"{name}={val}"].append(changes)
+            changes_percent[f"{name}={val}"].append(changes / baseline * 100)
+
+
+collect_diff(0, "strip")
+collect_diff(1, "panic")
+collect_diff(2, "opt-level")
+collect_diff(3, "lto")
+
+
+def analyze(l):
+    return f"MIN: {float(min(l)):.3}, AVG: {float(sum(l)/len(l)):.3}, MAX: {float(max(l)):.3}"
+
+
+print("Absolute changes")
+pprint({k: analyze(v) for k, v in changes_absolute.items()})
+print()
+print("Percent changes")
+pprint({k: analyze(v) for k, v in changes_percent.items()})
+
+print()
+print(changes_percent["opt-level=s"])
+print(changes_percent["opt-level=z"])