-Returns the label if one exists. If none exists, formats @var{label}
-using @var{var}'s print format (@pxref{Input and Output Formats}) in a
-static buffer and returns the buffer.
-
-@quotation Important
-This function's use of a static buffer means that it must be used with
-care.
-@end quotation
+If a label exists, it will be appended to the string pointed to by @var{str}.
+Otherwise, it formats @var{value}
+using @var{var}'s print format (@pxref{Input and Output Formats})
+and appends the formatted string.