How to edit/convert .mht file (psr.exe) using MS-Word

1. Run psr.exe (Problem Steps Recorder),
  go "settings" to increase the 'Number of recent screen captures to store' (ref2),
  exit and "record"

2. Do operation sequences you want to record

3. On psr.exe, "save" records to ZIP file

4. On Windows Explorer, "extract" the saved ZIP file

5. In the extracted files, open .mht file with MS-Word, and edit/save it.

ref1. ステップ記録ツールで保存したmhtファイルをWordで編集するには (2017/05/10)
  https://hamachan.info/win10-word-mht/

ref2. Using the “secret” Windows 7 Problem Steps Recorder to Create Step by Step Screenshot Documents (2010/01/04)
  https://blogs.msdn.microsoft.com/patricka/2010/01/04/using-the-secret-windows-7-problem-steps-recorder-to-create-step-by-step-screenshot-documents/