drupal module development theme function for module to display the content type field value using theme function
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I'm working on module in drupal, I've created a content type with some custom fields in it using admin/structure/create contenttype. when user saves the content type after entering fields. it should print the output(which is being generated in the module by some classes defined in it). for this i'm using **hook_node_presave($node)**. it is working fine.

Now i'm getting the output and i'm storing it in one field which is i've defined in content type itself and when user saves the contenttype. he is able to see the output. so i'm getting the output as i wanted.

**But, need to display this 

> output using proper theme() funcitons

. can anyone pls help me to get this worked**

Thanks in advance,

Sri