/* Get file from user and open the file.
&setvar fil := [response 'Enter file name to read']
&if [null %fil%] &then
&return &warning No file entered.
&setvar filunit := [open %fil% openstatus -read]
/* Check for error in opening file.
&if %openstatus% <> 0 &then
&return &warning Error opening file.
/* Read from file
&setvar line := [read %filunit% readstatus]
&if %readstatus% <> 0 &then
&return &warning Could not read file.
&do &while %readstatus% = 0
&type %line%
/* Read next line.
&setvar line := [read %filunit% readstatus]
&end
/* Close file.
&if [close %filunit%] <> 0 &then
&return &warning Unable to close %fil%.
&return End of file.
