Pretty self-explatory, try them out to see the difference.

These edit boxes are for the vocabulary lists or blocks of text that you wish to compare. Choose the format of your lists using by selecting the appropriate values from the 'Input Options' section above.

To help to resolve ambiguous words when analysing a block of text, place a | character (vertical bar) between words.

Choose one word/character per line when the input is a vocabulary list from Skritter or a flashcard text file. Anything after first whitespace on each line ignored.

Comma/whitespace separated will use the characters ,;| or any whitespace to separate the words in your input.

If pasting text from a web page or document use the 'Big block of text' option. This option is less precise, as word breaks have to be determined by this tool.