...
The user is given the ability to lookup a Greek / Hebrew word from its lexical form (default) or from a specific form as found in the text. The checkbox in the dropdown toggles the dataset used to retrieve suggestions. "specific forms" refers to forms actually present in a text, whereas a lexical form (as stored in the lexicon_<language>.txt files) are the forms of the root word. The use user is also given the ability to search by meaning, which uses the "translation" field for lexicon definition entries.
...