I'm having a doubt. I write a letter in notepad and i saved it as 'letter.txt'. Then i realized that i forgot to say one matter in that letter. So i opened 'letter.txt' using any text editor such as notepad, wordpad or something. Now i inserted the letters which i want to say in this letter at the middle of the file. My doubt is how it is works ?
this is my message.
How are you. Today i want to
it actually stored in memory like this
Now i want to add a sentence ' I am fine' after 'How are you. How it is works? How it added in the middle of the file? how the other words are not overwrite. What is process behind it ?