It is highly recommended to use "implicit none" which will greatly help to reduce typo's and programming errors.

cdds_openpr should be called to check for online help request or open the print file. The first time any API routine is called will cause DDS to initialize itself. This call will specifically initialize the print file; the user can always override and modify the print file creation via the PRINT_PATH environment. The '$Id: initialize.html 1 2009-01-06 00:31:13Z ehlersjw $' field will be filled in appropriately by RCS or CVS every time the file is checked out. The cdds_openpr routine will pull out what it needs, if available from the second parameter.

ier = cdds_openpr("filt", "$Id: initialize.html 1 2009-01-06 00:31:13Z ehlersjw $");
if (ier > 0) help();