Once the last datum has been entered and there are no
mistakes press the <End> key. A mask as shown in CRT 16 will be
displayed.
 i) Typing Y the computations will be performed and a mask
as shown in CRT 17 will be displayed on the screen. At the point
where the cursor is blinking you can enter Y or N. Entering Y
the MAIN MENU will be displayed. Entering N sends the cursor to
the first input field and new data can be entered.
 ii) Typing N sends the cursor to the last input field.

 4f) If the entered selection is 6, the display will be
cleared and control will be returned to the Operating System.

 Appendix A
 This appendix contains a brief description of how to enter
and edit data.

 i. The fields where you can enter your data are denoted
 with blue color.

 ii. Within the field you can move either to the right using
 the <-- > key or to the.left using the <<--> key.
 iii. If upon entering your data you detect an error:

 a) Press the <Del> key to erase the character at the
 cursor position or

 b) Press the <Back Space> key to erase the character
 at the left of the cursor position.

 iv. Entering the data you might use the <Ins> key. If you
 press it once a message "Typeover" wT-~Te displayed at
 the bottom of the screen and you will be able to enter
 any character at the position of the cursor (if any
 character is already written in this position it will
 be automatically deleted). If you press the <Ins> key
 twice, a message "Insert" will be displayed at the
 bottom of the screen and you will be able to insert a
 character at the cursor position without deleting the
 character which might have existed there.

 v. If any of the number values are not acceptable by the
 program a message "Value out of range,accept?" will be
 displayed at the bottom of the screen. You have to
 press N in order to reenter the value.

 vi. After entering the data into a field you can move to
 the next field pressing the <Return> key or the < 4/ >
 key. If you want to go back to the previous field
 press the < + > key.