Minor modifications to the README

README.md

@@ -2,7 +2,18 @@
 # precision-mode.el: Change format of data with uncertainties
 
 This simple emacs minor mode helps converting numerical values with
-uncertainties between human readable and computer readable formats.
+uncertainties between human readable and computer readable formats. It
+acts on regions of text, changing between the computer readable format
+```
+2.885701E+00 +/- 1.1368E-02
+2.896314E+00 +/- 3.8201E-02
+```
+and the human readable format
+```
+2.886(11)
+2.896(38)
+```
+
 
 ## Install
 
@@ -15,8 +26,8 @@ configuration files and add tou your `.emacs` file
 ## Usage
 
 At the moment the mode has some very simple features
-- `M-x prec-pm-to-paren`: Transforms values in the format `value +/-
-  error` into the human readable `value(error)`.
+- `M-x prec-pm-to-paren`: Transforms values in the format 
+`value +/- error` into the human readable `value(error)`.
 - `M-x prec-paren-to-pm`: Performs the inverse transformation. 
 
 The variable `prec-ndigits` contains the number of significant digits