The NULLS Command is used to turn the NULLS mode on and off. In the NULLS ON mode, null characters replace all but the first blank in a line. If the line is completely blank, null characters are not substituted.
To easily use the keyboard insert key to insert characters, turn NULLS mode ON so that trailing nulls is inserted in each data line in the display.
Normally, each data line is one field on the display. However, by using the TABS mode, 3270 tab characters can be created in selected columns and is a way to break up a line into several fields. NULLS will replace trailing blanks in each field.
If Edit places the cursor into a field, only blanks that follow the cursor on the line will be changed to NULLS. If a character is deleted with the DELETE key, all of the characters in the field is shifted left one position and NULL character is inserted into the last position in the field. If the Erase EOF key is pressed, NULL characters fill the field on which the cursor is located from the cursor to the end of the field. The syntax for the NULLS Command is:
NULLS {ON|OFF}
Default: ON
This command is available in edit mode.
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