diff --git a/Cargo.lock b/Cargo.lock
index 1a9af91..0114ffb 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -591,6 +591,7 @@ dependencies = [
  "anstyle",
  "clap_lex",
  "strsim",
+ "terminal_size",
 ]
 
 [[package]]
@@ -772,6 +773,16 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5443807d6dff69373d433ab9ef5378ad8df50ca6298caf15de6e52e24aaf54d5"
 
+[[package]]
+name = "errno"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "534c5cf6194dfab3db3242765c03bbe257cf92f22b38f6bc0c58d59108a820ba"
+dependencies = [
+ "libc",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "fastrand"
 version = "2.1.1"
@@ -1095,6 +1106,12 @@ version = "0.2.159"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "561d97a539a36e26a9a5fad1ea11a3039a67714694aaa379433e580854bc3dc5"
 
+[[package]]
+name = "linux-raw-sys"
+version = "0.4.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78b3ae25bc7c8c38cec158d1f2757ee79e9b3740fbc7ccf0e59e4b08d793fa89"
+
 [[package]]
 name = "lock_api"
 version = "0.4.12"
@@ -1446,6 +1463,19 @@ dependencies = [
  "semver",
 ]
 
+[[package]]
+name = "rustix"
+version = "0.38.37"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8acb788b847c24f28525660c4d7758620a7210875711f79e7f663cc152726811"
+dependencies = [
+ "bitflags",
+ "errno",
+ "libc",
+ "linux-raw-sys",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "rustls"
 version = "0.21.12"
@@ -1715,6 +1745,16 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "terminal_size"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4f599bd7ca042cfdf8f4512b277c02ba102247820f9d9d4a9f521f496751a6ef"
+dependencies = [
+ "rustix",
+ "windows-sys 0.59.0",
+]
+
 [[package]]
 name = "thread_local"
 version = "1.1.8"
diff --git a/Cargo.toml b/Cargo.toml
index de3d48b..7665547 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,7 +13,7 @@ license = "Apache-2.0"
 anyhow = "1.0.89"
 aws-config = "1.5.8"
 aws-sdk-s3 = { version = "1.55.0", features = ["http-1x"] }
-clap = { version = "4.5.20", features = ["derive"] }
+clap = { version = "4.5.20", features = ["derive", "wrap_help"] }
 http-body = "1.0.1"
 http-body-util = "0.1.2"
 serde = { version = "1.0.210", features = ["derive"] }
diff --git a/src/consts.rs b/src/consts.rs
index 2654bba..6dfa869 100644
--- a/src/consts.rs
+++ b/src/consts.rs
@@ -42,16 +42,14 @@ pub(crate) const MINIMUM_PART_NUMBER: u64 = 1;
 /// Source: https://docs.aws.amazon.com/AmazonS3/latest/userguide/qfacts.html
 pub(crate) const MAXIMUM_PART_NUMBER: u64 = 10_000;
 
-/// Part size: 5 MiB to 5 GiB.
+/// Minimum part size: 5 MiB
 ///
 /// There is no minimum size limit on the last part of your multipart upload.
 ///
 /// Source: https://docs.aws.amazon.com/AmazonS3/latest/userguide/qfacts.html
 pub(crate) const MINIMUM_PART_SIZE: u64 = 5 * MiB;
 
-/// Part size: 5 MiB to 5 GiB.
-///
-/// There is no minimum size limit on the last part of your multipart upload.
+/// Maximum part size: 5 GiB
 ///
 /// Source: https://docs.aws.amazon.com/AmazonS3/latest/userguide/qfacts.html
 pub(crate) const MAXIMUM_PART_SIZE: u64 = 5 * GiB;
diff --git a/src/main.rs b/src/main.rs
index fc4fb70..d0ce860 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -124,6 +124,15 @@ impl State {
     }
 }
 
+/// With Persevere you can upload huge files to S3 without worrying about network interruptions or
+/// other issues. Persevere will allow you to resume the upload where it was left off, even in the
+/// case of a system crash during upload.
+///
+/// The contents of the file you upload are always streamed, which means the memory usage of
+/// Persevere is minimal, usually below 10 MB. This makes it possible to upload files of any size
+/// supported by S3, even if they are larger than the available memory of your system.
+///
+/// Source: <https://github.com/takkt-ag/persevere>
 #[derive(Debug, Parser)]
 #[command(version)]
 enum Cli {
@@ -141,6 +150,11 @@ enum Cli {
     ///
     /// * `s3:PutObject`
     /// * `s3:AbortMultipartUpload`
+    ///
+    /// Persevere will automatically discover valid AWS credentials like most AWS SDKs. This means
+    /// you can provide environment variables such as `AWS_PROFILE` to select the profile you want
+    /// to upload a file with, or provide the `AWS_ACCESS_KEY_ID` and `AWS_SECRET_ACCESS_KEY`
+    /// directly.
     Upload(Upload),
     /// Resume the upload of a file to S3.
     ///
@@ -156,6 +170,11 @@ enum Cli {
     ///
     /// * `s3:PutObject`
     /// * `s3:AbortMultipartUpload`
+    ///
+    /// Persevere will automatically discover valid AWS credentials like most AWS SDKs. This means
+    /// you can provide environment variables such as `AWS_PROFILE` to select the profile you want
+    /// to upload a file with, or provide the `AWS_ACCESS_KEY_ID` and `AWS_SECRET_ACCESS_KEY`
+    /// directly.
     Resume(Resume),
     /// Abort the upload of a file to S3.
     ///
@@ -168,6 +187,11 @@ enum Cli {
     ///
     /// * `s3:PutObject`
     /// * `s3:AbortMultipartUpload`
+    ///
+    /// Persevere will automatically discover valid AWS credentials like most AWS SDKs. This means
+    /// you can provide environment variables such as `AWS_PROFILE` to select the profile you want
+    /// to upload a file with, or provide the `AWS_ACCESS_KEY_ID` and `AWS_SECRET_ACCESS_KEY`
+    /// directly.
     Abort(Abort),
 }