How to open HHK
| Name: HHK (HTML Help Index) | Developer: Microsoft |
| Supported OS: Windows | Category: System Files |
What is HHK
HHK file extension or HTML Help Index is a System Files.
Below you can find instructions how to download HHK and then open it.
What program opens HHK
File with the HHK file extension can be opened in the operating system Windows.