Basecamp

Navigation and selection

Expand selection left or right

`↑ Shift` + `← →`

All hotkeys for Basecamp

Navigation and selection Move cursor one character to left or right	`← →`
Navigation and selection Expand selection left or right	`↑ Shift` + `← →`
Navigation and selection (on the top) Scroll quickly to top of the page	`Mouse double click`
Navigation and selection Scroll to a section within a project	`↑ Shift` + `Mouse left click`
Navigation and selection Project	`G` then `1`
Navigation and selection Calendar	`G` then `2`
Navigation and selection Everything	`G` then `3`
Navigation and selection Progress (Timeline)	`G` then `4`
Navigation and selection Everyone	`G` then `5`
Navigation and selection Me	`G` then `6`
Navigation and selection Jump to search bar	`G` then `F`
Navigation and selection Jump between projects	`Ctrl` + `J`
Navigation and selection (Type my) Jump to your assignments, bookmarks, drafts and recent activity	`M` then `Y`
Editing Delete backward	`⬅ Backspace`
Editing Delete backward	`Ctrl` + `H`
Editing Delete forward	`Del`
Editing Delete forward	`Ctrl` + `D`
Editing Insert line break	`⤶ Enter`
Editing Insert line break	`Ctrl` + `O`
Editing Increase indent level	`⭾ Tab`
Editing Decrease indent level	`↑ Shift` + `⭾ Tab`
Editing Send message	`Ctrl` + `⤶ Enter`

Similar combinations for other applications

mpv

Exact seek 1 seconds (don't show on the OSD)

Navigation

`↑ Shift` + `← →`

Most used text editing

Select characters one at a time

Selecting text

`↑ Shift` + `← →`

Ableton Live 10 (Mac)

Move Clip Region with Start Marker

Clip View MIDI Editor

`↑ Shift` + `← →`

Ableton Live 10

Move Clip Region with Start Marker

Clip View MIDI Editor

`↑ Shift` + `← →`

Lacerte

Mark text in the direction of the arrow

Letter Editor

`↑ Shift` + `← →`

Tibia

Move the text cursor left/right, allowing you to add or remove text at a different position

Text editing

`↑ Shift` + `← →`

Adobe Lightroom Classic

Add previous/next photo to selection

Comparing photos in the Library module

`↑ Shift` + `← →`

Black Desert Online

Rotation

Screenshot mode

`↑ Shift` + `← →`

Nuke

(numpad) Nudge frames backward or forward by the amount specified in the skip frames control

2D compositing viewer

`↑ Shift` + `← →`

Microsoft FrontPage

(press one of the arrows repeatedly) With the insertion point in a cell, extend a selection to adjacent cells in a row.

Work with tables, graphics, and hyperlinks

`↑ Shift` + `← →`

Android

Highlight text for cutting or copying

Typing

`↑ Shift` + `← →`

NZBGet

Switch to first/last page in message list (pagination)

Messages tab commands

`↑ Shift` + `← →`

Eclipse

Expand selection by one character to the left or right

Selecting text

`↑ Shift` + `← →`

iTunes 11 for Windows

Listen to previous or next album in a list

Playback

`↑ Shift` + `← →`

Outlook 2016 and Outlook 2013

Select multiple adjacent items

Timeline view (Tasks): When an item is selected

`↑ Shift` + `← →`