diff --git a/src/main.rs b/src/main.rs
index 22ad14b..60182e8 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,13 +1,15 @@
 #![feature(io_error_more, fs_try_exists)]
 
-use clap::Parser;
-use clap::ArgAction;
+use clap::{Parser, ArgAction};
 
 mod directory;
+mod unit;
 use directory::Directory;
+use unit::Unit;
 
 use std::process::ExitCode;
 
+#[allow(clippy::struct_excessive_bools)]
 #[derive(Parser, Debug, Clone)]
 pub struct Args {
     #[arg(
@@ -16,43 +18,61 @@ pub struct Args {
         long_help = "keep going if an error occurs (ex. unreadable subdirectories in a readable directory)"
     )]
     persistant: bool,
-    
+
     #[arg(
         short, long,
         help = "minimize output",
-        long_help = "like -t, but does not print \"total: \" before the summary or the newline after. It also surpresses all error messages",
-        conflicts_with = "total_only",
+        long_help = "print nothing but the total size for all directories, without a newline. Also supresses all error messages",
+        conflicts_with = "total",
         default_value_t = false,
     )]
     minimal: bool,
 
+    #[arg(
+        short='T', long,
+        help = "display in tree",
+        default_value_t = false,
+        conflicts_with = "minimal",
+    )]
+    tree: bool,
+
     #[arg(
         short, long,
-        help = "only display the total size",
+        help = "display the total size",
         conflicts_with = "minimal",
         default_value_t = false,
     )]
-    total_only: bool,
+    total: bool,
 
     #[arg(
         short='2', long,
-        help = "print sizes in powers of 1024",
+        help = "alias for --unit 1024",
         default_value_t = false,
-        conflicts_with = "si"
+        conflicts_with_all = ["si","unit"],
     )]
     base_two: bool,
 
     #[arg(
         short='0', long,
-        help = "print sizes in powers of 1000",
+        help = "alias for --unit 1000",
         default_value_t = false,
-        conflicts_with = "base_two"
+        conflicts_with_all = ["base_two","unit"],
     )]
     si: bool,
 
+    #[arg(
+        short, long,
+        help = "unit to print in",
+        long_help = "printing unit (case insensitive): b = bytes, kb = kilobytes, ki = kibibytes, gb = gigabytes, gi = gibibytes, tb = terabytes, ti = tibibytes",
+        value_parser = Unit::parse,
+        default_value_t = Unit::Byte,
+        conflicts_with_all = ["base_two","si"],
+    )]
+    unit: Unit,
+
     #[arg(
         value_parser = validate_path,
-        help = "directories to summate",
+        help = "items to summate",
         action = ArgAction::Append,
         num_args = 1..
     )]
@@ -68,8 +88,14 @@ fn validate_path(s: &str) -> Result<String, String> {
 }
 
 fn main() -> ExitCode {
-    let args = Args::parse();
+    let mut args = Args::parse();
 
+    if args.base_two {
+        args.unit = Unit::Kibi;
+    } else if args.si {
+        args.unit = Unit::Kilo;
+    }
+    
     let mut total = 0;
     for path in args.path {
         let dir_structure = match Directory::new(path) {
@@ -81,24 +107,33 @@ fn main() -> ExitCode {
                 return ExitCode::FAILURE;
             }
         };
-        
+
         total += dir_structure.size();
 
-        if !args.minimal {
-            if args.total_only {
-                println!("{}: {}", dir_structure.path().to_str().unwrap(), dir_structure.size());
-            } else {
-                print!("{}", dir_structure.display());
-            }
+        if args.minimal {
+            // skip printing (this is a matter of indentation)
+            continue;
+        }
+
+        if args.tree {
+            println!("{}", dir_structure.display(args.unit));
+        } else {
+            println!(
+                "{}: {}",
+                dir_structure.path().display(),
+                dir_structure.scale(args.unit),
+            );
         }
     }
 
-    if args.total_only {
+    let total = args.unit.convert(total);
+
+    if args.total {
         println!("total: {total}");
     }
     else if args.minimal {
         print!("{total}");
     }
-    
+
     ExitCode::SUCCESS
 }
\ No newline at end of file