NAME: yyy_write_config PURPOSE: Writes the yyy_config file CALLING SEQUENCE: yyy_write_config, copy=copy INPUT: none, the filename is hardcoded, 'yyy_config.txt',and is put in a folder given by the routine yyy_config_filedir, that uses the IDL routine app_user_dir to create/obtain it: my linux example: /disks/ice/home/jimm/.idl/spedas/yyy_config-4-linux OUTPUT: the file is written, and a copy of any old file is generated KEYWORD: copy = if set, the file is read in and a copy with the !stime appended is written out HISTORY: Copied from tt2000_write_config and thm_write_config lphilpott 20-jun-2012 $LastChangedBy: jimm $ $LastChangedDate: 2014-02-11 10:54:32 -0800 (Tue, 11 Feb 2014) $ $LastChangedRevision: 14326 $ $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/spedas/gui/api_examples/file_configuration_tab/yyy_write_config.pro $