Section: String Functions
deblank function removes spaces at the end of a string
when used with the syntax
y = deblank(x)
where x is a string, in which case, all of the extra spaces
in x are stripped from the end of the string.  Alternately,
you can call deblank with a cell array of strings
y = deblank(c)
in which case each string in the cell array is deblanked.
--> deblank('hello   ')
ans = 
hello
and a more complex example with a cell array of strings
--> deblank({'hello  ','there ','  is  ','  sign  '})
ans = 
 [hello] [there] [  is] [  sign]