diff --git a/README.md b/README.md
index 3db3899..af9e9c5 100644
--- a/README.md
+++ b/README.md
@@ -14,15 +14,17 @@ Double Exchange Hamiltonian: Complete Version
 ------------
 
   1. Export environment variables for PETSc and SLEPc
-```shell
-export PETSC_DIR=${PATH_TO_PETSC_INSTALLATION}
-export SLEPC_DIR=${PATH_TO_SLEPC_INSTALLATION}
-```
+
+	```shell
+	export PETSC_DIR=${PATH_TO_PETSC_INSTALLATION}
+	export SLEPC_DIR=${PATH_TO_SLEPC_INSTALLATION}
+	```
 
   2. Make the executable
-```shell
-make ex1
-```
+
+	```shell
+	make ex1
+	```
 
 3. Using DEHam
 ---------------
@@ -31,21 +33,22 @@ make ex1
    has the topology of the Hamiltonian and the various parameters
    as explained below in a sample inputfile:
 
-```python
-140					# The total number of determinants
-7					# The largest number of non-zero elements per row
-2					# The number of processors used in parallel
-1					# The number of holes
-0					# The isz (ms-1/2) value
-1,2,3,1,2,3,4,5,6,7	# The topology of the system is specified here
-2,3,4,8,7,6,5,6,7,8	# first and second line contain the two sites linked
-1,1,1,2,2,2,2,3,3,3	# third line contains the type of link (1 for t, J 2 for K and 3 for none)
-.1430,-0.20,0.0000	# The three types of links this line gives J, K
-.1430,-0.20,0.0000	# 
--1.00,0.0,0.00		# This line gives t
-```
+	```python
+	140					# The total number of determinants
+	7					# The largest number of non-zero elements per row
+	2					# The number of processors used in parallel
+	1					# The number of holes
+	0					# The isz (ms-1/2) value
+	1,2,3,1,2,3,4,5,6,7	# The topology of the system is specified here
+	2,3,4,8,7,6,5,6,7,8	# first and second line contain the two sites linked
+	1,1,1,2,2,2,2,3,3,3	# third line contains the type of link (1 for t, J 2 for K and 3 for none)
+	.1430,-0.20,0.0000	# The three types of links this line gives J, K
+	.1430,-0.20,0.0000	# 
+	-1.00,0.0,0.00		# This line gives t
+	```
 
   2. running DEHam
-```shell
-mpiexec -n [nprocs] ./ex1 inpfile 
-```
+
+	```shell
+	mpiexec -n [nprocs] ./ex1 inpfile 
+	```