@item (:eval @var{form})
A list whose first element is the symbol @code{:eval} says to evaluate
@var{form}, and use the result as a string to display. Make sure this
-evaluation cannot load any files, nor calls functions like
+evaluation neither loads any files nor calls functions like
@code{posn-at-point} or @code{window-in-direction}, which themselves
evaluate the mode line, as doing so could cause infinite recursion.