List key names with this program. iftlist list on screen the specified or all key names and values in an Interfile-type file.
Here is an example: iftlist iea345.hdr patient_name. The program is command prompt based so you shouldnt expect any fancy GUI to guide you through the whole process.

Usage: iftlist [Options] <filename> [key1 [key2...]]

Options:
-a[ll]
List all values, also those with no key name
-value
Print only the key value(s) without key name(s)
-h or --help
Print this message and exit
-v, --version or --build
Print software build information and exit
--silent
Program works silently, printing only error and warning messages.

The license of this software is Freeware, you can free download and free use this calculator software.