diff --git a/README.md b/README.md
index 32350f9..49c9507 100644
--- a/README.md
+++ b/README.md
@@ -19,12 +19,12 @@ input:
     |--------------------------|   |--------------|
     /long/path/to/some/ebook.pdf   | Title Of Ebook
                                      ____
-                                      \
-    example usage:                     \
-    --------------                      \__________________
-                                                        ___\_
-    colmap --field-1='basename {}'  --field-2="awk { print $1 }"
-                                              _________________|: x-arg
+                                       |
+    example usage:                     | x:arg
+    --------------                     |                     
+                          ----------------                       
+    colmap 'basename {}' "awk { print $1 }"
+                                                    
 
     #OR
     colmap -f1 'basename {}' -f2 'awk { print $1 }'
@@ -45,20 +45,14 @@ foo_cmd | colmap --field-1='basename {}'  --field-2="awk { print $1 }"
 foo_cmd | colmap -f1 'basename {}' -f2 'awk { print $1 }'
 ```
 
-2. Passing an `xarg template`
+2. Passing `xargs` as positional arguments
 
 ```shell
-foo_cmd | colmap -t 'basename {}' 'awk { print $2 }'
+foo_cmd | colmap 'basename {}' 'awk { print $2 }'
 ```
 
 
-
 ---
 [I am using Github under protest](protest.md)
 
 
-TODO:
-----
-
-[ ] use golden tests
-[ ] use non-dashed cli like (rwxrob/bonzai)
diff --git a/src/lib.rs b/src/lib.rs
index 48e0d55..de25050 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -5,8 +5,14 @@ use regex::Regex;
 use std::result;
 use std::ops::Index;
 use std::slice::SliceIndex;
+use crate::parsing::DEFAULT_SEP_PATTERN;
 
-pub const DEFAULT_SEP_PATTERN: &str = r"[\t]+";
+
+pub mod parsing {
+
+    pub const DEFAULT_SEP_PATTERN: &str = r"[\t]+";
+
+}
 
 
 type Column = Vec<String>;
diff --git a/src/main.rs b/src/main.rs
index b26653f..2d288db 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -7,7 +7,7 @@
  */
 
 use clap::Parser;
-use colmap::DEFAULT_SEP_PATTERN;
+use colmap::parsing::DEFAULT_SEP_PATTERN;
 
 #[derive(Parser)]
 /// colmap - map commands to columns of text input
@@ -22,8 +22,8 @@ use colmap::DEFAULT_SEP_PATTERN;
 struct Cli {
     /// separator character used to split text into columns
     #[arg(default_value_t=DEFAULT_SEP_PATTERN.to_owned())]
-    #[arg(short, long = "sep")]
-    separator: String,
+    #[arg(short)]
+    delimiter: String,
 
     #[arg(short, long, action = clap::ArgAction::Count)]
     debug: u8,
@@ -41,7 +41,7 @@ fn main() {
     // }
 
     if cli.debug > 0 {
-        println!("{:?}", cli.separator);
+        println!("{:?}", cli.delimiter);
     }
 
     for c in cli.commands {