command | helpfile | context | topic | Description |
HV_HELPONHELP | Ignored | Ignored | Ignored | Displays how to use the help system |
HV_CONTENTS | File name | Ignored | Ignored | Displays the contents page of a help file |
HV_KEY | File name | Ignored | Topic name | Displays a specified topic in a help file |
HV_CONTEXT | File name | Number | Ignored | Displays a specified numeric context in a help file |
HV_QUIT | File name | Ignored | Ignored | Removes the help viewer |