To access a range of characters in a string, a slicing method is used. Slicing in a string is done using a slicing operator (:). Here's a program that demonstrates string slicing:

# Creating a String 
String = "Exploratory Data Analysis"
 
# Outputs: Slicing characters from 3-12:loratory 
print("
Slicing characters from 3-12: ") 
print(String[3:12]) 
 
# Outputs:Slicing characters between 3rd and 2nd last character: loratory Data Analys 
print("
Slicing characters between " + "3rd and 2nd last character: ") 
print(String[3:-2]) 

The output of each code block is displayed with an inline comment, which makes it easier to comprehend.