how do I identify an unfamiliar symbol in an excel cell

[Yosef2]

The symbol underlined r has appeared in a cell but I cannot get rid of it

 

[Gary''s Student]

Strange stuff in a cell might be some kind of picture or other object. Place
the cursor on the "thing" and right-click. See if clear or delete shows up
as an option.

 

[MDOTJR]

is it a symbol or a broken link refference... check insert symbol