```coffeescript
'.platform-darwin .pdf-view':
  'cmd-+': 'pdf-view:zoom-in'
  'cmd-=': 'pdf-view:zoom-in'
  'cmd--': 'pdf-view:zoom-out'
  'cmd-_': 'pdf-view:zoom-out'
  'cmd-0': 'pdf-view:reset-zoom'

'.platform-win32 .pdf-view, .platform-linux .pdf-view':
  'ctrl-+': 'pdf-view:zoom-in'
  'ctrl-=': 'pdf-view:zoom-in'
  'ctrl--': 'pdf-view:zoom-out'
  'ctrl-_': 'pdf-view:zoom-out'
  'ctrl-0': 'pdf-view:reset-zoom'
```

Add default keybinding for go-to-page command
user
```coffeescript
'.pdf-view':
  'ctrl-g': 'pdf-view:go-to-page'

'.platform-darwin .pdf-view':
  'cmd-+': 'pdf-view:zoom-in'
  'cmd-=': 'pdf-view:zoom-in'
  'cmd--': 'pdf-view:zoom-out'
  'cmd-_': 'pdf-view:zoom-out'
  'cmd-0': 'pdf-view:reset-zoom'

'.platform-win32 .pdf-view, .platform-linux .pdf-view':
  'ctrl-+': 'pdf-view:zoom-in'
  'ctrl-=': 'pdf-view:zoom-in'
  'ctrl--': 'pdf-view:zoom-out'
  'ctrl-_': 'pdf-view:zoom-out'
  'ctrl-0': 'pdf-view:reset-zoom'
```
assistant