HP 68000 Series, User Manual

Page: 232 / 586

After opening a file using the File User_Fopen Append or File User_Fopen
Create command, you can use the Expression Fprintf command to write
information to the file. Files opened for reading may be read from the built-in
macro fgetc(). See the "Predefined Macros" chapter of this manual for a
complete description of this macro.
The window number must be between 50 and 256 inclusive.
Use the Window Delete or the File Window_Close command to close the file.
Example
To open user window 57 and redirect any data written to window 57 to the file
’varTrace.out’:
File User_Fopen Create 57 File varTrace.out
To close the file associated with a window number
•
Using the command line, enter:
File Window_Close
Enter the window number associated with the file when it was opened, and
press the < Return> key.
Example To close the file associated with user window number 57:
File Window_Close 57
Chapter 6: Using Macros and Command Files
Using Command Files
210