How does it work / What is CSAPI?
CSAPI stands for “Common Speller API”. The CSAPI is intended for use by all Microsoft applications, which include spell-checking. CSAPI is currently provided by many vendors and is used by Microsoft Office family and many other applications. The CSAPI engine is not shipped inside The Bat! installation package, but if you have Microsoft Office installed, The Bat! does automatically detect the presence of CSAPI and uses it. The major advantage of CSAPI is good support of multiple languages. Available CSAPI dictionaries are displayed in “Language” submenu of “Spell Checker” menu below a horizontal splitting line. The absence of a splitting line in “Language” submenu indicates that no CSAPI engine is installed on your computer.