Components

openpad (notepad), is a simple application to write memos and others, and this app is very interesting for us to use.

Proposal

I suggest this app, should the developer add features "Undo and Redo".

1. Undo is a command to cancel a command that has been done before.
   The Undo command is used to undo some of the last commands you performed.
2. Redo is a way to repeat something that has been canceled before.
   The redo command is the reverse of the Undo command, the redo command serves to return a canceled command using the Undo command.

Mockups / Examples

• Before
  
• After
  

Benefits

The benefits of this feature are:

1. the user can cancel the command that has been done before.

2. this picture in the photo at night.And the user can also repeat something that has been canceled before.

3. In conclusion Undo command is used when you want to cancel the command that you have done before, but with record command not save.
   While the redo command is used to cancel Undo commands.