''Note that IO_CheckList is always framed...''

Checklist is created as follows:

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*'''format''' is a 3 char string that holds the shape of a checked option(i.e. "[X]" or "<@>"),if the format is zero, then depending of the value of '''mode''' being '''Radio''' or '''CheckBox''', frame will be defaulted to '''_RADIOLIST_CHARS''' or '''_CHECKLIST_CHARS''' respectively.

*'''frameChars''' is a string with the characters building the frame.

===Public Methods===