diff --git a/src/cplex/cli.rs b/src/cplex/cli.rs
new file mode 100644
index 0000000..dd36ed5
--- /dev/null
+++ b/src/cplex/cli.rs
@@ -0,0 +1,135 @@
+/// This is just structures for parsing Cli args
+#[derive(Parser, Debug, Clone)]
+#[clap(name="plexcryptool", author="Christoph J. Scherr", version, about="Various tools for use with math and cryptology, includes executable and a library.")]
+pub struct Cli {
+    /// Which submodule to use
+    #[command(subcommand)]
+    command: Commands,
+
+    /// Machine output
+    #[arg(short, long, default_value_t = false, global = true)]
+    machine: bool,
+
+    /// Verbose output
+    #[arg(short, long, default_value_t = false, global = true)]
+    verbose: bool,
+}
+
+#[derive(Subcommand, Debug, Clone)]
+pub enum Commands {
+    /// Use math functions
+    Math(MathCommand),
+    /// Use binary functions
+    Binary(BinaryCommand),
+    /// Use custom algorithms
+    Algo(AlgoCommand),
+}
+
+#[derive(Args, Clone, Debug, PartialEq, Eq)]
+pub struct MathCommand {
+    #[command(subcommand)]
+    action: MathActions
+}
+
+#[derive(Args, Clone, Debug, PartialEq, Eq)]
+pub struct BinaryCommand {
+    #[command(subcommand)]
+    action: BinaryActions
+}
+
+#[derive(Args, Clone, Debug, PartialEq, Eq)]
+pub struct AlgoCommand {
+    #[command(subcommand)]
+    action: AlgoActions
+}
+
+#[derive(Subcommand, Clone, Debug, PartialEq, Eq)]
+pub enum MathActions {
+    #[command(name="modexp")]
+    Modexp(ModexpArgs),
+    Modred(ModredArgs),
+    Pm1(PM1Args),
+}
+
+#[derive(Args, Clone, Debug, PartialEq, Eq)]
+pub struct ModexpArgs {
+    base: String,
+    exp: String,
+    field: String
+}
+
+#[derive(Args, Clone, Debug, PartialEq, Eq)]
+pub struct ModredArgs {
+    #[clap(value_parser=maybe_hex::<u64>)]
+    polynomial: u64,
+    #[clap(value_parser=maybe_hex::<u64>)]
+    relation: u64,
+}
+
+#[derive(Args, Clone, Debug, PartialEq, Eq)]
+pub struct PM1Args {
+    #[clap(value_parser=maybe_hex::<u128>)]
+    n: u128,
+    #[clap(value_parser=maybe_hex::<u128>)]
+    max_prime: u128,
+}
+
+#[derive(Subcommand, Clone, Debug, PartialEq, Eq)]
+pub enum BinaryActions {
+    /// bit rotation/circular shifting (only 32bit)
+    #[command(name="rotate")]
+    Rotate(RotateArgs),
+    Xor(XorArgs)
+}
+
+#[derive(Args, Clone, Debug, PartialEq, Eq)]
+pub struct RotateArgs {
+    #[arg(short, long, default_value_t = false)]
+    left: bool,
+    #[clap(value_parser=maybe_hex::<u32>)]
+    base: u32,
+    #[clap(value_parser=maybe_hex::<u32>)]
+    shift_width: u32,
+}
+
+#[derive(Args, Clone, Debug, PartialEq, Eq)]
+pub struct XorArgs {
+    #[clap(value_parser=maybe_hex::<u128>)]
+    a: u128,
+    #[clap(value_parser=maybe_hex::<u128>)]
+    b: u128,
+}
+
+#[derive(Subcommand, Clone, Debug, PartialEq, Eq)]
+pub enum AlgoActions {
+    #[command(name="feistel0-i")]
+    Feistel0Inner(Feistel0InnerArgs),
+    #[command(name="feistel0-sbox")]
+    Feistel0SBOX(Feistel0SBOXArgs),
+    #[command(name="feistel0")]
+    Feistel0(Feistel0Args)
+}
+
+#[derive(Args, Clone, Debug, PartialEq, Eq)]
+pub struct Feistel0InnerArgs {
+    #[clap(value_parser=maybe_hex::<u16>)]
+    input: u16,
+    #[clap(value_parser=maybe_hex::<u16>)]
+    key: u16,
+}
+
+#[derive(Args, Clone, Debug, PartialEq, Eq)]
+pub struct Feistel0SBOXArgs {
+    #[clap(value_parser=maybe_hex::<u8>)]
+    index: u8,
+}
+
+#[derive(Args, Clone, Debug, PartialEq, Eq)]
+pub struct Feistel0Args{
+    #[clap(value_parser=maybe_hex::<u32>)]
+    input: u32,
+    #[clap(value_parser=maybe_hex::<u32>)]
+    key: u32,
+    #[arg(short, long, default_value_t = false)]
+    decrypt: bool,
+}
diff --git a/src/common_plex/mod.rs b/src/cplex/mod.rs
similarity index 92%
rename from src/common_plex/mod.rs
rename to src/cplex/mod.rs
index 68f6893..d5b6239 100644
--- a/src/common_plex/mod.rs
+++ b/src/cplex/mod.rs
@@ -1,4 +1,4 @@
-/// # common module
+/// # cplex module
 ///
 /// This module implements functionality used by multiple other ones.
 ///
diff --git a/src/common_plex/printing.rs b/src/cplex/printing.rs
similarity index 75%
rename from src/common_plex/printing.rs
rename to src/cplex/printing.rs
index 83f6406..478ded2 100644
--- a/src/common_plex/printing.rs
+++ b/src/cplex/printing.rs
@@ -8,12 +8,15 @@
 /// License:    MIT
 /// Source:     <https://git.cscherr.de/PlexSheep/plexcryptool/>
 
-use crate::Cli;
-
 use std::fmt::{Debug, LowerHex};
 
 use num::Integer;
 
+/// print a seperator
+pub fn seperator() {
+    println!("{:=<120}", '=');
+}
+
 /// process a result with some int
 pub fn proc_result<T>(result: Result<T, String>, args: Cli)
     where
@@ -27,7 +30,7 @@ pub fn proc_result<T>(result: Result<T, String>, args: Cli)
                 println!("{:#x}", res);
             }
             else {
-                println!("=======================================================================");
+                seperator();
                 println!("result is {:#x}", res);
             }
         }
@@ -36,7 +39,7 @@ pub fn proc_result<T>(result: Result<T, String>, args: Cli)
                 println!("{:#?}", e)
             }
             else {
-                println!("=======================================================================");
+                seperator();
                 println!("could not compute:\n{:#?}", e)
             }
         }
@@ -54,7 +57,7 @@ pub fn proc_num<T>(num: T, args: Cli)
         println!("{:#x}", num);
     }
     else {
-        println!("=======================================================================");
+        seperator();
         println!("result is {:#x}", num);
     }
 }
@@ -68,7 +71,7 @@ pub fn proc_vec<T>(vec: Vec<T>, args: Cli)
         println!("{:#?}", vec);
     }
     else {
-        println!("=======================================================================");
+        seperator();
         println!("result is\n{:#?}", vec);
     }
 }
@@ -84,7 +87,7 @@ pub fn proc_result_vec<T>(res: Result<Vec<T>, String>, args: Cli)
                 println!("{:#?}", vec);
             }
             else {
-                println!("=======================================================================");
+                seperator();
                 println!("result is {:#?}", vec);
             }
         }
@@ -93,7 +96,7 @@ pub fn proc_result_vec<T>(res: Result<Vec<T>, String>, args: Cli)
                 println!("{:#?}", e)
             }
             else {
-                println!("=======================================================================");
+                seperator();
                 println!("could not compute:\n{:#?}", e)
             }
         }
diff --git a/src/lib.rs b/src/lib.rs
index 8cd3b18..f901b07 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -23,6 +23,7 @@ use pyo3::prelude::*;
 mod binary;
 mod math;
 mod algo;
+mod cplex;
 
 #[pymodule]
 fn register_binary_module(py: Python, parent_module: &PyModule) -> PyResult<()> {
diff --git a/src/main.rs b/src/main.rs
index 3e27a58..4bbcdcb 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -21,7 +21,7 @@
 mod binary;
 mod math;
 mod algo;
-mod common_plex;
+mod cplex;
 
 use std::{str::FromStr, fmt::Debug};
 
@@ -29,7 +29,7 @@ use clap::{Args, Parser, Subcommand};
 use clap_num::maybe_hex;
 use num_bigint;
 /*************************************************************************************************/
-// This is just structures for parsing Cli args
+/// This is just structures for parsing Cli args
 #[derive(Parser, Debug, Clone)]
 #[clap(name="plexcryptool", author="Christoph J. Scherr", version, about="Various tools for use with math and cryptology, includes executable and a library.")]
 pub struct Cli {
@@ -47,7 +47,7 @@ pub struct Cli {
 }
 
 #[derive(Subcommand, Debug, Clone)]
-enum Commands {
+pub enum Commands {
     /// Use math functions
     Math(MathCommand),
     /// Use binary functions
@@ -57,25 +57,25 @@ enum Commands {
 }
 
 #[derive(Args, Clone, Debug, PartialEq, Eq)]
-struct MathCommand {
+pub struct MathCommand {
     #[command(subcommand)]
     action: MathActions
 }
 
 #[derive(Args, Clone, Debug, PartialEq, Eq)]
-struct BinaryCommand {
+pub struct BinaryCommand {
     #[command(subcommand)]
     action: BinaryActions
 }
 
 #[derive(Args, Clone, Debug, PartialEq, Eq)]
-struct AlgoCommand {
+pub struct AlgoCommand {
     #[command(subcommand)]
     action: AlgoActions
 }
 
 #[derive(Subcommand, Clone, Debug, PartialEq, Eq)]
-enum MathActions {
+pub enum MathActions {
     #[command(name="modexp")]
     Modexp(ModexpArgs),
     Modred(ModredArgs),
@@ -83,14 +83,14 @@ enum MathActions {
 }
 
 #[derive(Args, Clone, Debug, PartialEq, Eq)]
-struct ModexpArgs {
+pub struct ModexpArgs {
     base: String,
     exp: String,
     field: String
 }
 
 #[derive(Args, Clone, Debug, PartialEq, Eq)]
-struct ModredArgs {
+pub struct ModredArgs {
     #[clap(value_parser=maybe_hex::<u64>)]
     polynomial: u64,
     #[clap(value_parser=maybe_hex::<u64>)]
@@ -98,7 +98,7 @@ struct ModredArgs {
 }
 
 #[derive(Args, Clone, Debug, PartialEq, Eq)]
-struct PM1Args {
+pub struct PM1Args {
     #[clap(value_parser=maybe_hex::<u128>)]
     n: u128,
     #[clap(value_parser=maybe_hex::<u128>)]
@@ -106,7 +106,7 @@ struct PM1Args {
 }
 
 #[derive(Subcommand, Clone, Debug, PartialEq, Eq)]
-enum BinaryActions {
+pub enum BinaryActions {
     /// bit rotation/circular shifting (only 32bit)
     #[command(name="rotate")]
     Rotate(RotateArgs),
@@ -114,7 +114,7 @@ enum BinaryActions {
 }
 
 #[derive(Args, Clone, Debug, PartialEq, Eq)]
-struct RotateArgs {
+pub struct RotateArgs {
     #[arg(short, long, default_value_t = false)]
     left: bool,
     #[clap(value_parser=maybe_hex::<u32>)]
@@ -124,7 +124,7 @@ struct RotateArgs {
 }
 
 #[derive(Args, Clone, Debug, PartialEq, Eq)]
-struct XorArgs {
+pub struct XorArgs {
     #[clap(value_parser=maybe_hex::<u128>)]
     a: u128,
     #[clap(value_parser=maybe_hex::<u128>)]
@@ -132,7 +132,7 @@ struct XorArgs {
 }
 
 #[derive(Subcommand, Clone, Debug, PartialEq, Eq)]
-enum AlgoActions {
+pub enum AlgoActions {
     #[command(name="feistel0-i")]
     Feistel0Inner(Feistel0InnerArgs),
     #[command(name="feistel0-sbox")]
@@ -142,7 +142,7 @@ enum AlgoActions {
 }
 
 #[derive(Args, Clone, Debug, PartialEq, Eq)]
-struct Feistel0InnerArgs {
+pub struct Feistel0InnerArgs {
     #[clap(value_parser=maybe_hex::<u16>)]
     input: u16,
     #[clap(value_parser=maybe_hex::<u16>)]
@@ -150,13 +150,13 @@ struct Feistel0InnerArgs {
 }
 
 #[derive(Args, Clone, Debug, PartialEq, Eq)]
-struct Feistel0SBOXArgs {
+pub struct Feistel0SBOXArgs {
     #[clap(value_parser=maybe_hex::<u8>)]
     index: u8,
 }
 
 #[derive(Args, Clone, Debug, PartialEq, Eq)]
-struct Feistel0Args{
+pub struct Feistel0Args{
     #[clap(value_parser=maybe_hex::<u32>)]
     input: u32,
     #[clap(value_parser=maybe_hex::<u32>)]
@@ -172,6 +172,9 @@ struct Feistel0Args{
 /// internal functions with the corresponding values, then shows the results to the user.
 pub fn main() {
     let args = Cli::parse();
+    if args.verbose {
+        cplex::printing::seperator();
+    }
     match args.clone().command {
         Commands::Math(action) => {
             match action.action {
@@ -180,11 +183,11 @@ pub fn main() {
                     let e = num_bigint::BigInt::from_str(&mod_exp_args.exp.as_str()).expect("could not make bigint");
                     let f = num_bigint::BigInt::from_str(&mod_exp_args.field.as_str()).expect("could not make bigint");
                     let num = math::modexp::modular_exponentiation(b.clone(), e, f, args.verbose);
-                    common_plex::printing::proc_num(num, args);
+                    cplex::printing::proc_num(num, args);
                 }
                 MathActions::Modred(mod_red_args) => {
                     let result = math::modred::modred(mod_red_args.polynomial, mod_red_args.relation, args.verbose);
-                    common_plex::printing::proc_result(result, args);
+                    cplex::printing::proc_result(result, args);
                 }
                 MathActions::Pm1(pm1_args) => {
                     let vec: Result<Vec<u128>, String> = math::pm1::p_minus_one(
@@ -192,7 +195,7 @@ pub fn main() {
                         pm1_args.max_prime,
                         args.verbose
                         );
-                    common_plex::printing::proc_result_vec(vec, args);
+                    cplex::printing::proc_result_vec(vec, args);
                 }
             }
         }
@@ -206,11 +209,11 @@ pub fn main() {
                     else {
                         result = binary::rotr32(bin_rot_args.base, bin_rot_args.shift_width);
                     }
-                    common_plex::printing::proc_num(result, args);
+                    cplex::printing::proc_num(result, args);
                 },
                 BinaryActions::Xor(bin_xor_args) => {
                     let result: u128 = binary::xor(bin_xor_args.a, bin_xor_args.b);
-                    common_plex::printing::proc_num(result, args);
+                    cplex::printing::proc_num(result, args);
                 }
             }
         }
@@ -218,11 +221,11 @@ pub fn main() {
             match action.action {
                 AlgoActions::Feistel0Inner(alg_fei_args) => {
                     let result: u16 = algo::feistel0::inner(alg_fei_args.input, alg_fei_args.key, args.verbose);
-                    common_plex::printing::proc_num(result, args);
+                    cplex::printing::proc_num(result, args);
                 }
                 AlgoActions::Feistel0SBOX(alg_fsb_args) => {
                     let result: u8 = algo::feistel0::sbox(alg_fsb_args.index);
-                    common_plex::printing::proc_num(result, args);
+                    cplex::printing::proc_num(result, args);
                 }
                 AlgoActions::Feistel0(alg_fe0_args) => {
                     let keys = algo::feistel0::key_scheduler(alg_fe0_args.key);
@@ -233,7 +236,7 @@ pub fn main() {
                     else {
                         result = algo::feistel0::encrypt(alg_fe0_args.input, keys, args.verbose);
                     }
-                    common_plex::printing::proc_num(result, args);
+                    cplex::printing::proc_num(result, args);
                 }
             }
         }
diff --git a/src/math/modred.rs b/src/math/modred.rs
index 07d9024..2a74ecb 100644
--- a/src/math/modred.rs
+++ b/src/math/modred.rs
@@ -10,6 +10,8 @@
 /// License:    MIT
 /// Source:     <https://git.cscherr.de/PlexSheep/plexcryptool/>
 
+use crate::cplex;
+
 #[test]
 fn test_modred() {
     let rel: u64 = 0x1053;
@@ -22,9 +24,9 @@ pub fn modred(mut poly: u64, relation: u64, verbose: bool) -> Result<u64, String
     let mut diffrence: u32;
     let mut index: usize = 0;
     if verbose {
-        println!("relation:\t0x{:x}\t", relation);
-        println!("polynomial:\t0x{:x}\t", poly);
-        println!("=======================================================================");
+        println!("relation:\t{:#x}\t", relation);
+        println!("polynomial:\t{:#x}\t", poly);
+        println!("{:=<120}", '=');
     }
     if relation > poly {
         if verbose {
@@ -36,7 +38,7 @@ pub fn modred(mut poly: u64, relation: u64, verbose: bool) -> Result<u64, String
         diffrence = relation.leading_zeros() - poly.leading_zeros();
         poly = poly ^ (relation << diffrence);
         if verbose {
-        println!("{index}:\tpoly: 0x{:x}\t 0b{:b}", poly, poly);
+        println!("{index}:\tpoly: {:#x}\t {:#064b}", poly, poly);
         }
         index += 1;
     }