The REXX panel facility provides the REXX programmer with simple
tools and commands for panel definition and for panel input/output
to 3270 type terminals. The panel facility allows easy definition
of panels using any editor. The requirement is that the panel source
definition file should be in the REXX File System (RFS) before it
is further processed. The panel input/output command provides the
ability within a REXX program to dynamically change many of the field
attributes statically defined by the panel definition facility. The
following example helps you see the capability and function of the
panel facility and also helps you understand and visualize the general
concepts described in this chapter. An overview of the example follows:
- Defines field control characters that set the characteristics
of panel fields.
- Uses the field control characters to define a panel layout. The
control character definition and the panel definition (the two parts
together are called panel source) is saved in
the REXX File System.
- Uses the panel source to generate a panel object that
is used to send or receive panels in a REXX program.