Substitute text into x in excel

Udjut Posts 1 Registration date Tuesday October 21, 2014 Status Member Last seen October 27, 2014 - Oct 27, 2014 at 05:02 AM
Hi there,

I'm nowhere to run related to the above subject, hoping you can help me to sort out this issue.

In column/row A1 text is equal to "closed". What I wanted to do is that in B1 I want to mark letter "x" from the word "closed". Is there any formula or any related for me just to type the word closed without marking in B1 manually?