#### 4.10.28 UnsetBookmark

Syntax: `UnsetBookmark [`n`|`-`]`
Abbreviation: `UBM`

unsets the nth bookmark, making it as if it had never been set; see SetBookmark. 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.