Optionaldescription: stringOptionalcommandId: numberCommand id.
Description of the command.
Copies all properties defined by the prototype of HistoryEntry from other to this instance.
Clones this instance and returns a new HistoryEntry with identical values.
Determines if this HistoryEntry instance is equal to the other instance.
StaticisDetermines if both HistoryEntry instances are equal.
Struct refering to an entry in the undo history stack.