Original “Twenty Tweleve” theme does not have a search box at top right corner (same row with header).

Here are the steps taken to add a search box:

1. add a folder for child theme in same directory of parent theme, e.g. “/wp-content/themes”
2. name the folder as “twentytwelve-child-theme”
3. refer to http://zeaks.org/create-a-wordpress-child-theme/ on how to create a child theme
   • all modifications are done on child theme rather on parent theme
   • child theme copies/inherits all properties from parent theme
   • copy “header.php” from parent theme, “twentytwelve” to child theme folder, “twentytwelve-child-theme”
   • modify the “header.php” in “twentytwelve-child-theme”
   • modify the “style.css” in “twentytwelve-child-theme”
4. in the “Dashboard -> Appearance -> Themes”, choose the newly created child theme:
   • 

     finally, a search box has been added:
     

Source: http://zeaks.org/tutorials/twenty-twelve-theme-search-form-in-header/

There are 2 methods.

Method 1:  “Machine -> New” to manually select the existing “vdi” file

1. Refer to guide — www.arysontechnologies.com/blog/how-to-open-vdi-file/
   • Launch VirtualBox and create a new virtual machine. Choose an operating system among the choices given and click on Next button
   • Under Virtual Hard Disk, select Use existing hard disk and then click on the folder icon on the right
   • Now, a Virtual Media Manager window is opened. In that, click on the Add button and then select the VDI file which you want to open
   • Again, Virtual Hard Disk window is opened in which your new VDI is being shown and then click on Next
   • Now, your new virtual machine is started
   • After you have created, you may need to change the settings, e.g. network, as this “vbi” file was created using another machine/laptop.

Method 2: “Machine -> Add” to add “vbox” file

1. Goto “Machine -> Add” to add a virtual machine , e.g.  Linux Mint version 17 Cinnamon 64 bit, from “X:\VirtualBox Files\Linux Mint\Linux Mint.vbox” into your VirtualBox
2. After you have added/imported, you may need to change the settings, e.g. network, as this “vbox” file was created using another machine/laptop.

Conclusion: Hotkey (AutoHotkey) can have a maximum of 1 character key (alphanumeric)  only, e.g.

• ^1 — accepted
• ^10 — fail

In order to use more that 1 character key, then refer to https://mobitek-system.com/blog/2020/06/autohotkey-how-to-define-2-alphabet-keys-as-hotkey/

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AutoHotkey allows user to define a custom combination of two keys (except joystick buttons) by using ampersand (&) between them. As for example:

a & b::MsgBox Hello!!!

Hold down <a> key then press <b> key to trigger the message box.

But by using this way, key <a> will become a prefix key. In other words, it will causes key <a> to lose its original function when it is pressed, i.e. “a” will not appear in text box. To avoid this behaviour, one of the way is to apply the tilde prefix (~) to the key.

For example:

~a & b::MsgBox Hello!!!

Using tilde in front of keys will maintain the native function of the keys used. However, Special hotkeys that are substitutes for alt-tab always ignore the tilde prefix.

Source:

• https://www.autohotkey.com/docs/Hotkeys.htm#combo
• https://autohotkey.com/board/topic/5408-multiple-letter-hotkeys/