I have some trouble with editing textfields in excel as well as in TM1Web

1) If I once have inserted a text, is it possible to edit this text (changing, updating, adding) without typing the hole text once again ?
2) column D to M are connected. Is there any chance to get the "optimal" line-height ? (if I enter 4 or more lines, so that everything is displayed)
3) is it possible to copy text (which is e.g. edited by notepad or word) to my fields without deleting the dbrw-function ?
4) is it possible to save text-formattings (bold, italics or something else for a PART of the contents) in the textfields ?
5) Inserting a linebreak in textfields within TM1Web seems to be not possible ? Does anybody know more about this "feature" ?
Thanks a lot in advance
Newcomer