diff --git a/math/int2str/src/main.rs b/math/int2str/src/main.rs
index db2b19a..1722b3e 100644
--- a/math/int2str/src/main.rs
+++ b/math/int2str/src/main.rs
@@ -12,21 +12,21 @@ fn main() {
 
     let mut f0 = unsafe { File::from_raw_fd(0) };
     eprintln!("
-> 0:
+>0:
   ( ℕ )
   ( MachineInt )
   ( MachineWord )
-  ( Array 8 MachineSlab )
-  ( Pipe Shot (Array 8 MachineSlab) )
+  ( Stream MachineSyllab )
 ");
 
     eprintln!("
-< 1:
+<1:
   ( ℕ )
-  ( Sequence (Digit 10) )
-  ( Sequence ASCII )
-  ( Sequence MachineSlab )
-  ( Pipe Shot (Sequence MachineSlab) )
+  ( PositionalInt 10 BigEndian )
+  ( Sequence ( Digit 10 ) )
+  ( Sequence UTF-8-Char )
+  ( Stream UTF-8-Char )
+  ( Stream MachineSyllab )
 ");
 
     nested::magic_header();
diff --git a/math/radix_transform/src/main.rs b/math/radix_transform/src/main.rs
index 220a6cf..b2abba6 100644
--- a/math/radix_transform/src/main.rs
+++ b/math/radix_transform/src/main.rs
@@ -21,28 +21,48 @@ use {
 async fn main() {
     let mut td = TypeDict::new();
     for tn in vec![
-        "MachineWord", "MachineInt", "MachineSlab",
-        "Vec", "NullTerminatedString",
-        "Sequence", "Ascii",
+        "MachineWord", "MachineInt", "MachineSyllab",
+        "Vec", "Stream", "Json",
+        "Sequence", "UTF-8-Char",
         "PositionalInt", "Digit", "LittleEndian", "BigEndian",
-        "DiffStream", "ℕ"
+        "DiffStream", "ℕ",
+        "$src_radix", "$dst_radix"
     ] { td.add_typename(tn.into()); }
 
     let radix_types = vec![
         td.type_term_from_str("( ℕ )").unwrap(),
         td.type_term_from_str("( PositionalInt 10 LittleEndian )").unwrap(),
         td.type_term_from_str("( Sequence ( Digit 10 ) )").unwrap(),
-        td.type_term_from_str("( Sequence Ascii )").unwrap(),
-        td.type_term_from_str("( Sequence MachineSlab )").unwrap()
+        td.type_term_from_str("( Sequence UTF-8-Char )").unwrap(),
+        td.type_term_from_str("( Sequence MachineSyllab )").unwrap()
+    ];
+
+    let src_types = vec![
+        td.type_term_from_str("( ℕ )").unwrap(),
+        td.type_term_from_str("( PositionalInt $src_radix LittleEndian )").unwrap(),
+        td.type_term_from_str("( Sequence ( Digit $src_radix ) )").unwrap(),
+        td.type_term_from_str("( Sequence MachineInt )").unwrap(),
+        td.type_term_from_str("( DiffStream ( Vec MachineInt ) )").unwrap(),
+        td.type_term_from_str("( Json )").unwrap(),
+        td.type_term_from_str("( Stream UTF-8-Char )").unwrap(),
+        td.type_term_from_str("( Stream MachineSyllab )").unwrap()
+    ];
+
+    let dst_types = vec![
+        td.type_term_from_str("( ℕ )").unwrap(),
+        td.type_term_from_str("( PositionalInt $dst_radix LittleEndian )").unwrap(),
+        td.type_term_from_str("( Sequence ( Digit $dst_radix ) )").unwrap(),
+        td.type_term_from_str("( Sequence MachineInt )").unwrap(),
+        td.type_term_from_str("( DiffStream ( Vec MachineInt ) )").unwrap(),
+        td.type_term_from_str("( Json )").unwrap(),
+        td.type_term_from_str("( Stream UTF-8-Char )").unwrap(),
+        td.type_term_from_str("( Stream MachineSyllab )").unwrap()
     ];
 
     nested::magic_header();
     eprintln!("    Convert Radix of Positional Integer");
     nested::magic_header();
 
-    let mut args = std::env::args();
-    args.next().expect("Arg $0 missing!");
-
     eprintln!("\n$1: src_radix");
     for t in radix_types.iter() {
         eprintln!("  {}", td.type_term_to_str(t));
@@ -53,58 +73,29 @@ async fn main() {
         eprintln!("  {}", td.type_term_to_str(t));
     }
 
+    eprintln!("\n>0: n");
+    for t in src_types.iter() {
+        eprintln!("  {}", td.type_term_to_str(t));
+    }
+
+    eprintln!("\n<1: n");
+    for t in dst_types.iter() {
+        eprintln!("  {}", td.type_term_to_str(t));
+    }
+
+    nested::magic_header();
+
+    let mut args = std::env::args();
+    args.next().expect("Arg $0 missing!");
+    
     let src_radix_str = args.next().expect("Arg $1 required!");
     let dst_radix_str = args.next().expect("Arg $2 required!");
 
     let src_radix = usize::from_str_radix(&src_radix_str, 10).expect("could not parse src_radix");
     let dst_radix = usize::from_str_radix(&dst_radix_str, 10).expect("could not parse dst_radix");
 
-    let in_types = vec![
-        td.type_term_from_str("( ℕ )").unwrap(),
-        td.type_term_from_str("( PositionalInt )").unwrap()
-            .num_arg(src_radix as i64)
-            .arg(td.type_term_from_str("( LittleEndian )").unwrap())
-            .clone(),
-
-        td.type_term_from_str("( Sequence )").unwrap()
-            .arg(
-                td.type_term_from_str("( Digit )").unwrap()
-                    .num_arg(src_radix as i64).clone()
-            )
-            .clone(),
-
-        td.type_term_from_str("( Sequence MachineInt )").unwrap(),
-        td.type_term_from_str("( DiffStream ( Vec MachineInt ) )").unwrap(),
-    ];
-
-    let out_types = vec![
-        td.type_term_from_str("( ℕ )").unwrap(),
-        td.type_term_from_str("( PositionalInt )").unwrap()
-            .num_arg(dst_radix as i64)
-            .arg(td.type_term_from_str("( LittleEndian )").unwrap()).clone(),
-
-        td.type_term_from_str("( Sequence )").unwrap()
-            .arg(
-                td.type_term_from_str("( Digit )").unwrap()
-                    .num_arg(dst_radix as i64).clone()
-            )
-            .clone(),
-
-        td.type_term_from_str("( Sequence MachineInt )").unwrap(),
-        td.type_term_from_str("( DiffStream ( Vec MachineInt ) )").unwrap(),
-    ];
-
-    eprintln!("\n>0: n");
-    for t in in_types.iter() {
-        eprintln!("  {}", td.type_term_to_str(t));
-    }
-
-    eprintln!("\n<1: n");
-    for t in out_types.iter() {
-        eprintln!("  {}", td.type_term_to_str(t));
-    }
-
-    nested::magic_header();
+    assert!(src_radix > 1);
+    assert!(dst_radix > 1);
 
     let src_digits_port = ViewPort::new();
     let dst_digits_port = ViewPort::new();
diff --git a/math/str2int/src/main.rs b/math/str2int/src/main.rs
index 596004c..ad22e83 100644
--- a/math/str2int/src/main.rs
+++ b/math/str2int/src/main.rs
@@ -10,31 +10,51 @@ fn main() {
     eprintln!("       Parse MachineInt from String");
     nested::magic_header();
 
-    let mut f0 = unsafe { File::from_raw_fd(0) };
     eprintln!("
-> 0:
+$1: radix
   ( ℕ )
-  ( Sequence (Digit 10) )
-  ( Sequence ASCII )
-  ( Sequence MachineSlab )
-  ( Pipe Shot (Sequence MachineSlab) )
+  ( PositionalInt 10 BigEndian )
+  ( Sequence ( Digit 10 ) )
+  ( Sequence UTF-8-Char )
+  ( Sequence MachineSyllab )
 ");
 
-    let mut f1 = unsafe { File::from_raw_fd(1) };
     eprintln!("
-< 1:
+>0: n
+  ( ℕ )
+  ( PositionalInt $radix BigEndian )
+  ( Sequence ( Digit $radix ) )
+  ( Sequence UTF-8-Char )
+  ( Stream UTF-8-Char )
+  ( Stream MachineSyllab )
+");
+
+    eprintln!("
+<1: n
   ( ℕ )
   ( MachineInt )
   ( MachineWord )
-  ( Array 8 MachineSlab )
-  ( Pipe Shot (Array 8 MachineSlab) )
+  ( Stream MachineSyllab )
 ");
 
     nested::magic_header();
 
+    let mut f0 = unsafe { File::from_raw_fd(0) };
+    let mut f1 = unsafe { File::from_raw_fd(1) };
+
+    let mut args = std::env::args();
+    args.next().expect("Arg $0 missing!");
+
+    let radix_str = args.next().expect("Arg $1 required!");
+    
+    let radix = u32::from_str_radix(&radix_str, 10).expect("could not parse radix");
+    if radix > 16 {
+        panic!("invalid radix! (radix<=16 required)");
+    }
+    
     let mut chars = Vec::new();
     f0.read_to_end(&mut chars);
-    chars.retain(|c| (*c as char).is_numeric());
-    f1.write(&u64::from_str_radix(&String::from_utf8_lossy(&chars), 10).unwrap().to_le_bytes());
+    chars.retain(|c| (*c as char).is_alphanumeric());
+    f1.write(&u64::from_str_radix(&String::from_utf8_lossy(&chars), radix).unwrap().to_le_bytes());
 }
 
diff --git a/nested/src/integer/radix.rs b/nested/src/integer/radix.rs
index a62876f..606f8b3 100644
--- a/nested/src/integer/radix.rs
+++ b/nested/src/integer/radix.rs
@@ -82,8 +82,6 @@ impl RadixProjection {
 
 impl Observer<dyn SequenceView<Item = usize>> for RadixProjection {
     fn reset(&mut self, view: Option<Arc<dyn SequenceView<Item = usize>>>) {
-        eprintln!("reset");
-
         self.src_digits = view;
     }