1 When Mercurial accepts more than one revision, they may be specified

     2 individually, or provided as a topologically continuous range,

     3 separated by the ":" character.

     4 

     5 The syntax of range notation is [BEGIN]:[END], where BEGIN and END are

     6 revision identifiers. Both BEGIN and END are optional. If BEGIN is not

     7 specified, it defaults to revision number 0. If END is not specified,

     8 it defaults to the tip. The range ":" thus means "all revisions".

     9 

    10 If BEGIN is greater than END, revisions are treated in reverse order.

    11 

    12 A range acts as a closed interval. This means that a range of 3:5

    13 gives 3, 4 and 5. Similarly, a range of 9:6 gives 9, 8, 7, and 6.