6530 Programmer's Guide

Block Mode Operation
6530 Programmer’s Guide 3-5
Auto-Tab Disable
Normally, keyboard entry into the last character position of an
unprotected field causes the cursor to automatically tab to the first
position of the next unprotected field. This is inhibited when the auto-tab
disable attribute is set for an unprotected field. In this case, when a
character is entered into the last position of the field, the cursor advances
to the next position on the screen.
By definition, this position is the video attribute for the next field and,
thus, is a protected area. (Under any other circumstances, it is impossible
to place the cursor into a protected area.) While the cursor is in this
position, further keyboard entry is inhibited. Once the user moves the
cursor (with a tab or other cursor control key), normal keyboard entry
continues.
A typical use for the auto-tab disable is to prevent the user from writing
overflow information from one unprotected field into the next unprotected
field. For example, if the user attempts to enter nine digits into an eight-
digit field, the auto-tab disable prevents the ninth digit from being entered
into the next field.
Table 3-1. Data Type Summary
Data
Type Use (A-Z) (a-z) (0-9) .,+-$ Space Other
0Free entry XXXX X X
1 Alphabetic X X
2 Numeric X
3 Alphanumeric X X X
4 Full numeric X X
5 Full numeric
with space
XX X
6 Alphabetic
with space
XX X
7 Alphanumeric
with space
XXXX