Update importfromcsvstring.md

Author: ws-garcia

docs/api/methods/importfromcsvstring.md

@@ -55,4 +55,8 @@ See also
 
 User can set `CommentLineIndicator` for those CSV files having a combination of empties lines, blanks lines or commented ones for parse the file ONLY when the parser is working on `QuotationMode.Critical` mode. In that mode, the cited lines are simply skipped, leaving no empty values between records separated by this kind of lines. In other words, if the CSV file holds a record and then some special lines (blank, empty or commented) and then another record, the second record will be saved contiguous to the first record ignoring the lines between both.
 
+>:warning: **CAUTION**
+>
+>If the CSV file has no data, this is the file is an empty one, the `ImportFromCSV` method returns an empty array, that is, an array bounded from 0 to -1 and holding no elements and no data.
+
 [Back to Methods overview](https://ws-garcia.github.io/VBA-CSV-interface/api/methods/)