What is the simplest way to do XML Formatting
I have tried searching but my search results have not been very specific. Please, how do I add xml tags to a set of string values that I have. For instance: 
"I am a boy"
"I am a girl"

after xml tags become:
(tag open)"I am a boy"(tag closed) (tag open)"I am a girl"(tag closed)

Is there an easy program in which I could just click around and eventually enclose about 50 of these kind of sentences instead of manually typing? Any idea that does not involve coding will be greatly appreciated.

Thank you :)
What is the simplest way to do XML Formatting
===

I have tried searching but my search results have not been very specific. Please, how do I add xml tags to a set of string values that I have. For instance: 
"I am a boy"
"I am a girl"

after xml tags become:
(tag open)"I am a boy"(tag closed) (tag open)"I am a girl"(tag closed)

Is there an easy program in which I could just click around and eventually enclose about 50 of these kind of sentences instead of manually typing? Any idea that does not involve coding will be greatly appreciated.

Thank you :)