All SWAT+ input files are free format and space delimited.
The first line in each input file is reserved for a title. If the files were written using the SWAT+ Editor, the title will specify the name of the file, the version of the SWAT+ Editor, and the date and time the file was written. While this line is required, it is not read in by SWAT+ and may be modified or left blank. The title is limited to 80 spaces.
The second line in all SWAT+ input files except for file.cio is reserved for the header, i.e. the names of the variables listed in the file. Some files will have additional header lines (e.g., print.prt).