Right-click/open mode/select a program to open. What should I do?

Windows Registry Editor Version 5.00
[Hkey_classes_root \ unknown]
"Alwaysshowext" = ""
"Queryclassstore" = ""
[Hkey_classes_root \ unknown \ shell]
@ = "Openas"
[Hkey_classes_root \ unknown \ shell \ openas]
[Hkey_classes_root \ unknown \ shell \ openas \ command]
@ = Hex (2): 25, 00, 53,00, 79,00, 00, 6d, 00, 6f, 00, 6f, 25 ,\
00, 5C, 00, 00, 00, 5C, 00 ,\
6e, 00, 6C, 00, 6C, 00, 00, 2e ,\
, 79, 65, 00, 6d, 00, 00, 6f, 00, 6f, 00, 00, 00, 5C, 00 ,\
79,00, 6d, 00, 00, 5C, 68, 00, 00, 6C, 00, 6C ,\
, 33, 00, 2e, 00, 6C, 00, 6C, 00, 2c, 00, 4f, 00, 00, 6e, 00 ,\
, 00, 5f, 75, 00, 6e, 00, 4C, 00, 4C, 31, 00

Save it to the notepad file: in the blank area of the desktop, right-click and choose new> text document> open the new document>CodeCopy it in, and then -- save the file under the title bar -- in the open window -- save it to the -- desktop (easy to find and change, of course, elsewhere, but don't forget) file name -- changed to XX. reg (only change the file name must have. reg, other gender actions) -- finalized
On the desktop, there is a registry file named XX. Reg. Now the registry is created.

That is to say ...... Copy the unintelligible code to the notepad ...... Then press save ...... Add XX. Reg (for example, Sy. Reg) in the file name column )...... Save to desktop or somewhere else ...... Close Notepad ...... Double-click to open ...... It will ask you if you want to write the information into the registry ...... Press OK ...... You can also download the ready-made files/chinhr/xx.rar, and double-click the downloaded files.