Proofreading text in English is a specialist skill. It is said that it is impossible for anyone to proofread their own work. This is because the author’s eye might only see what it thinks has been written down, not what has actually been written down. The following is an example of actual written work for an essay in English literature. It is clear that it had not even been spell-checked.
A. is the original material:
The imagery used here by K throughout t his poem, shows his appreciation, for the beauty of what is around him, from the birds singing too the rain falling two the branches of the tree falling on his shouldres.
B. is the corrected material following proofreading:
The imagery used here by K throughout this poem, shows his appreciation for the beauty of what is around him, from the birds singing, to the rain falling, to the branches of the tree falling on his shoulders.