Align selected controls middle

`Ctrl` + `Alt` + `5`

All hotkeys for Balsamiq Mockups (Windows)

Selection Edit the selected control's text	`Enter` / `F2`
Selection Add to selection	`Shift` + `Click`
Selection Toggle selection	`Ctrl` + `Click`
Selection Select All	`Ctrl` + `A`
Selection Deselect All	`Ctrl` + `Shift` + `A`
Selection Resize maintaining aspect ratio	`Hold Shift`
Selection Disable snapping during move or resize	`Hold Ctrl`
Selection Increase font or icon size	`Ctrl` + `]`
Selection Decrease font or icon size	`Ctrl` + `[`
Selection Nudge selection 20px	`Shift` + `Arrow Up` / `Arrow Down` / `Arrow Right` / `Arrow Left`
Selection Nudge selection 1px	`Arrow Up` / `Arrow Down` / `Arrow Right` / `Arrow Left`
Selection Nudge-Resize selection 2px	`Ctrl` + `Alt` + `Arrow Up` / `Arrow Down` / `Arrow Right` / `Arrow Left`
Selection Nudge-Resize selection 20px	`Ctrl` + `Alt` + `Shift` + `Arrow Up` / `Arrow Down` / `Arrow Right` / `Arrow Left`
Selection Bring to front	`Ctrl` + `Shift` + `Arrow Up`
Selection Pan the canvas (Hand tool)	`Space` + `Click and drag`
Selection Send to back	`Ctrl` + `Shift` + `Arrow Down`
Selection Bring forward	`Ctrl` + `Arrow Up`
Selection Send backward	`Ctrl` + `Arrow Down`
Selection Clone selection	`Alt` + `Drag`
Edit/History Undo last command	`Ctrl` + `Y`
Edit/History Redo last command	`Ctrl` + `Z`
Edit/History Cut the selected controls	`Ctrl` + `X`
Edit/History Copy the selected controls	`Ctrl` + `C`
Edit/History Paste	`Ctrl` + `V`
Edit/History Paste In Place	`Ctrl` + `Shift` + `V`
Edit/History Delete the selected controls	`Delete`
Edit/History Duplicate the selected controls	`Ctrl` + `D`
Edit/History Lock the selected controls	`Ctrl` + `2`
Edit/History Unlock all locked controls	`Ctrl` + `3`
Group Group the selected controls	`Ctrl` + `G`
Group Ungroup the selected groups	`Ctrl` + `Shift` + `G`
Align Align selected controls left	`Ctrl` + `Alt` + `1`
Align Align selected controls center	`Ctrl` + `Alt` + `2`
Align Align selected controls right	`Ctrl` + `Alt` + `3`
Align Align selected controls top	`Ctrl` + `Alt` + `4`
Align Align selected controls middle	`Ctrl` + `Alt` + `5`
Align Align selected controls bottom	`Ctrl` + `Alt` + `6`
Working with Icons Navigating the suggestion list	`Arrow Up` / `Arrow Down` / `Arrow Left` / `Arrow Right`
Working with Icons Using the selected icon	`Enter`
Working with Icons Closing the icons library	`Esc`
Working with Icons Closing the suggestion list	`Esc`
Working with Text Start Editing text of the selected control	Eneter/ `F2`
Working with Text Committing the current text	`Enter` / `Ctrl` + `Enter`
Working with Text Ignoring the current edit	`Esc`
Working with Text Grow/Increase Text Size	`Ctrl` + `]`
Working with Text Shrink/Decrease Text Size	`Ctrl` + `[`
Quick Add Sending focus to quick add	`/` / `plus`
Quick Add Navigating the Suggestion List	Arrow Up/ `Arrow Down` / `Arrow Left` / `Arrow Right`
Quick Add Closing the Suggestion List	`Esc`
Quick Add Sending focus back to the Canvas	`Esc`
Working with Mockup Files New Blank Mockup	`Ctrl` + `N`
Working with Mockup Files New Clone of Current Mockup	`Ctrl` + `Shift` + `N`
Working with Mockup Files Open a mockup file	`Ctrl` + `O`
Working with Mockup Files Save the current mockup file	`Ctrl` + `S`
Working with Mockup Files Save as	`Ctrl` + `Shift` + `S`
Working with Mockup Files Close current mockup	`Ctrl` + `W`
Working with Mockup Files Close all mockups	`Ctrl` + `Shift` ++ `W`
Working with Mockup Files Export this mockup's XML	`Ctrl` + `E`
Working with Mockup Files Import mockup	`Ctrl` + `Shift` + `E`
Working with Mockup Files Export Snapshot to Clipboard	`Ctrl` + `Shift` + `C`
Working with Mockup Files Export Snapshot to PNG	`Ctrl` + `R`
Working with Mockup Files Export All Snapshots to PNG	`Ctrl` + `Shift` + `R`
Working with Mockup Files Print mockup	`Ctrl` + `P`
Working with Mockup Files Quit Balsamiq Mockups	`Ctrl` + `Q`
Working with Mockup Files Looping through the open files in Mockups for Desktop	`Ctrl` + `Tab` / `Ctrl` + `Shift` + `Tab`
Views Hide/Show the UI Library	`Ctrl` + `L`
Views Enter Full Screen View	`Ctrl` + `F`
Views Exit Full Screen View	`Esc`
Views Show/Hide Markup	`Ctrl` + `K`
Views Zoom In	`Ctrl` + `plus`
Views Zoom Out	`Ctrl` + `-`
Views Zoom to Actual Size	`Ctrl` + `1`
Views Zoom to Fit	`Ctrl` + `0`