And can they be edited to suit, also how many chords can be setup and for which parts etc.

With the advanced features on modern arrangers, I am just curious as to how the various manufactures go about it. (Are they pretty much the same, are they totally different, or indeed do some still use simple major and minor etc.)

Comparisons could also be handy to pressure all manufactures to adopt all the different ways available.

NOTE: If you wish to post the relevant sections from the manual, (Which may help readers to understand better) then please feel free to do so.

Alternatively post a link to the relevant manual and page numbers.

http://www.wersidirect.com/WERSI_Direct_Ltd/Downloads_files/OAA%20Manual%20V1.pdf pages 21 - 25

Bill