#### 4.10.26 SetBookmark

Syntax: `SetBookmark [`n`|`-`]`
Abbreviation: `SBM`

sets the nth bookmark to the current cursor position. If the optional n argument is not specified, it is assumed to be zero. You can also unset the ‘`-`’ automatic bookmark, but it will be reset automatically to the current position whenever a `GotoBookmark` command is issued. Each document's valid bookmark designations are 0 to 9, and the ‘`-`’ automatic bookmark.