IO_AllowEsc       Indicate if Esc key is operative
IO_DefineMsg      Display message when user moves to specified imput field
IO_DefindStr      Define all characteristics of specific input field
IO_DisplayFields  Display imput fields on screen, prior to imput
IO_Edit           Control user input of data
IO_SetColors      Set colors values
IO_SetFields      Indicates total number of input fields
IO_SoundBeeper    Switch beep on or off
IO_UserHook       Provide way to call non-Toolkit Procedure