## How to write values to a file

When you need to write certain values (results) to a file you may use either the ”send” command which allows to write results in certain formats or a command file which uses the 'echo' system command in combination with the “valu” command. The following list shows the general structure of such a command file:
• Choose the relevant dataset (menu or ds command)
• Add the relevant node to a set ('qadd setname' or 'seta setname n number')
• Open the stack: stack on
• Place node-values on the stack: prnt se setname
• Store the node: valu nod1 pop
• Store the value: valu val1 pop
• Write to file: sys echo Node nod1 Value val1 >| file.txt
• Or optionally: sys printf (consult the man page for the format) >| file.txt
See also “if” and “while” and see the demo in “If and while demo” on how to work with this commands. They are useful for automatic processing.