There are four kinds of options to choose between, under the options menu.
Automatic deletion of used files or removable media. There are four different deletion alternatives:
Delete the smaller files after restoring.
Delete the big file after splitting.
Delete the self-uniting file after restoring.
Erase removable media before writing to them.
The first three are for cleaning up after the job is finished, the last one does its job before splitting.
As a rather special case, you may choose to extract only a part of the big file to the smaller ones. Notice that this implies that the original file can NOT be restored from the smaller files, but if you are only interested in extracting some part of a file, this may be useful. In the same manner, you may append the smaller files to an already existing file, building up an even larger file. This will also create a big file that does not equal the original one, but in special cases, this might be what you really want.
It is also possible to force the splitting to be done after a certain character. This is done by first finding starting points for the splittings by following the requested sizes for the smaller files. Next, the first occurrence of the requested character for splitting is located and the splitting points are moved so that the smaller files will be slightly smaller but directly after a character of your choice. This may be used, for instance, to split text files at end of lines (<LF>), between words (Space) or after a sentence (Dot), but any character may be used, even non-printable ones. These are choosen by their ascii number.
The smaller files get the same file name as the big file, except that something is added to the end. This "something" is of the form "ending" + "index", where the latter one is an integer starting from 1 and increase with 1 for each smaller file; the former one is up to you to choose. Default, this is set to .Chopped_, but it may be set to anything that can be used as part of a file name.
Notice that altering this text might confuse the program that has to restore the big file. For instance, if the big file is named A.exe, then the smaller files are normally named A.exe.Chopped_1, A.exe.Chopped_2, ..., but let's say you change the ending to _Split:. Then the smaller files will get the names A.exe_Split:1, A.exe_Split:2, .... So far, so good. Now you email these files to a friend of yours, who also happens to have this program. He starts the program but it searches for files of the type *.Chopped_*, when the program should look for *_Split:*, and hence, can't find your smaller files. Therefore, if you can't resist changing this value, remember to inform the "Restorer" to use the same ending.