HP-UX TN3270 Users Guide, March 1998

Table Of Contents
Chapter 3 83
Getting Started with 3270 Emulation
Double-Byte Characters
representing the ASCII characters you want to use. For example, setting
SNAP3270_SO to 3E and SNAP3270_SI to 3C displays right and left
angle brackets, > (0x3E) for SO and < (0x3C) for SI.
The miscellaneous system key SOSI TOG (SO/SI Toggle) enables you to
control whether SO and SI characters are displayed on the screen. SO
and SI are displayed either as blanks or as the characters defined by the
SNAP3270_SO and SNAP3270_SI environment variables.
Field Outlining
For fields that contain double-byte characters, the host can specify an
additional character attribute called field outlining. This means that the
field is displayed with lines drawn around it. Any combination of lines
above, below, left, and right can be specified; combining all four causes
the field to display with a complete rectangle around it. The lines are
always displayed as the host color blue (normal display—not intense,
reversed, or blinking).
Cursor Display in Double-Byte and Mixed
Fields
When the cursor is in a single-byte or double-byte field, you can enter
only the specified type of characters at the cursor position. When it is in a
mixed field, you can enter double-byte characters if the cursor is in a
double-byte subfield (between the SO and SI characters), and single-byte
characters otherwise. The Cursor Width indicator on the status line
indicates whether the current cursor position enables you to enter
single-byte or double-byte characters. For more information about this
indicator, see Appendix B, “Status Line Information.”
Motif The Cursor Width indicator is not used in the Motif program; instead,
the width of the cursor itself indicates the width of the characters you
can enter. When the cursor is in a double-byte field on the screen, it is
displayed as a long cursor (covering two character positions) instead of
the standard one-character cursor. In a mixed field, the long cursor is
displayed in positions where you can enter a double-byte character, and
the short cursor is displayed elsewhere.
End of section