docs: add some more help strings

src/cli/backup.rs

@@ -9,15 +9,29 @@ use std::path::{Path, PathBuf};
 #[derive(Subcommand)]
 pub enum BackupCommands {
     /// List all tracked backups
+    ///
+    /// Note that this will only list backups for the layers currently configured, and will ignore
+    /// any other layers also present in the backup directory.
     List(BackupListArgs),
     /// Manually create a new backup
+    ///
+    /// Note that backups created using this command will count towards the length of a chain, and
+    /// can therefore shorten how far back in time your backups will be stored.
     Create(BackupCreateArgs),
-    /// Restore a backup including all of its required predecessors
+    /// Restore a backup
+    ///
+    /// This command will restore the selected backup by extracting its entire chain up to and
+    /// including the requested backup in-order.
     Restore(BackupRestoreArgs),
     /// Export a backup into a full archive
+    ///
+    /// Just like the restore command, this will extract each backup from the chain up to and
+    /// including the requested backup, but instead of writing the files to disk, they will be
+    /// recompressed into a new tarball, resulting in a new tarball containing a full backup.
     Export(BackupExportArgs),
-    /// Extract a single backup; meant as a convenience method for working with the output of
-    /// `export`
+    /// Extract an archive file, which is assumed to be a full backup.
+    ///
+    /// This command mostly exists as a convenience method for working with the output of `export`.
     Extract(BackupExtractArgs),
 }
 
@@ -48,6 +62,9 @@ pub struct BackupRestoreArgs {
     /// Directory to store worlds in
     output_worlds: PathBuf,
     /// Whether to overwrite the contents of the output directories
+    ///
+    /// If set, the output directories will be completely cleared before trying to restore the
+    /// backup.
     #[arg(short, long, default_value_t = false)]
     force: bool,
     /// Create output directories if they don't exist
@@ -75,6 +92,9 @@ pub struct BackupExtractArgs {
     /// Directory to store worlds in
     output_worlds: PathBuf,
     /// Whether to overwrite the contents of the output directories
+    ///
+    /// If set, the output directories will be completely cleared before trying to restore the
+    /// backup.
     #[arg(short, long, default_value_t = false)]
     force: bool,
     /// Create output directories if they don't exist