Delete space according to the timeline selection

`Ctrl` + `Delete`

All hotkeys for FL Studio (Windows)

File Operations Open file	`Ctrl` + `O`
File Operations Save file	`Ctrl` + `S`
File Operations Save new version	`Ctrl` + `N`
File Operations Save as...	`Ctrl` + `Shift` + `S`
File Operations Export wave file	`Ctrl` + `R`
File Operations Export MP3 file	`Ctrl` + `Shift` + `R`
File Operations Export MIDI file	`Ctrl` + `Shift` + `M`
File Operations Open recent files 0..9	`Alt` + `0` .. `9`
File Operations Browser smart find...	`Ctrl` + `F`
Pattern Selector Select patterns 1..9	`NumPad` `1` .. `9`
Pattern Selector Next pattern	`NumPad` `+`
Pattern Selector Previous pattern	`NumPad` `-`
Pattern Selector Next pattern	`Arrow Right`
Pattern Selector Previous pattern	`Arrow Left`
Pattern Selector Next empty pattern	`F4`
Channel Window & Step Sequencer Mute/Unmute first 10 channels	`0` .. `9`
Channel Window & Step Sequencer Solo/Unsolo first 10 channels	`Ctrl` + `0` .. `9`
Channel Window & Step Sequencer Select previous channel	`Arrow Up`
Channel Window & Step Sequencer Next channel	`Arrow Down`
Channel Window & Step Sequencer Group selected channels	`Alt` + `G`
Channel Window & Step Sequencer Zip selected channels	`Alt` + `Z`
Channel Window & Step Sequencer Unzip selected channels	`Alt` + `U`
Channel Window & Step Sequencer Move selected channels up	`Shift` + `Arrow Up`
Channel Window & Step Sequencer Move selected channels down	`Shift` + `Arrow Down`
Channel Window & Step Sequencer Next channel group	`PgUp`
Channel Window & Step Sequencer Previous channel group	`PgDn`
Channel Window & Step Sequencer Copy channel steps/score	`Ctrl` + `C`
Channel Window & Step Sequencer Paste channel steps/score	`Ctrl` + `V`
Channel Window & Step Sequencer Cut channel steps/score	`Ctrl` + `X`
Channel Window & Step Sequencer Delete selected channels	`Alt` + `Delete`
Channel Window & Step Sequencer Clone channels	`Ctrl` + `Shift` + `C`
Channel Window & Step Sequencer Shift steps left	`Shift` + `Arrow Left`
Channel Window & Step Sequencer Shift steps right	`Shift` + `Arrow Right`
Channel Window & Step Sequencer Randomize	`Alt` + `R`
Channel Window & Step Sequencer Send to Piano Roll	`Alt` + `P`
Channel Window & Step Sequencer Show Keyboard Editor	`K`
Channel Window & Step Sequencer Show Graph Editor	`G`
Channel Window & Step Sequencer Channels - Restretch all	`Ctrl` + `Alt` + `R`
Record / Playback / Transport Toggle line/none snap	`Backspace`
Record / Playback / Transport Start/Stop playback	`Space`
Record / Playback / Transport Start/Pause playback	`Ctrl` + `Space`
Record / Playback / Transport Switch Pattern/Song mode	`L`
Record / Playback / Transport Switch on/off recording (this also works during playback)	`R`
Record / Playback / Transport Fast forward	`NumPad` `0` (zero)
Record / Playback / Transport Previous bar (Song mode)	`NumPad` `/`
Record / Playback / Transport Jump 4 bars back (Song mode)	`Ctrl` + `NumPad` `/`
Record / Playback / Transport Next bar (Song mode)	`NumPad` `*`
Record / Playback / Transport Jump 4 bars forward (Song mode)	`Ctrl` + `NumPad` `*`
Record / Playback / Transport Toggle Step Edit mode	`Ctrl` + `E`
Record / Playback / Transport Stop sound (panic)	`Ctrl` + `H`
Record / Playback / Transport Toggle typing keypad to piano keypad	`Ctrl` + `T`
Record / Playback / Transport Toggle blend notes	`Ctrl` + `B`
Record / Playback / Transport Toggle metronome	`Ctrl` + `M`
Record / Playback / Transport Toggle recording metronome precount	`Ctrl` + `P`
Record / Playback / Transport Toggle wait for input to start recording	`Ctrl` + `I`
Window Navigation Cycle nested windows	`Tab`
Window Navigation Open Plugin Picker	`Ctrl` + `F8`
Window Navigation Open Project Picker	`Ctrl` + `Alt` + `F8`
Window Navigation Plugin database	`Shift` + `F8`
Window Navigation Toggle max/min Playlist	`Enter`
Window Navigation Closes a window	`Esc`
Window Navigation Help	`F1`
Window Navigation Toggle Playlist	`F5`
Window Navigation Toggle Step Sequencer	`F6`
Window Navigation Toggle Piano Roll	`F7`
Window Navigation Show/hide Sample Browser	`F8`
Window Navigation Show/hide Mixer	`F9`
Window Navigation Show/hide MIDI settings	`F10`
Window Navigation Show/hide song info window	`F11`
Window Navigation Close all windows	`F12`
Window Navigation Close all unfocused windows	`Ctrl` + `F12`
Window Navigation Align all channel editors (since program version 11.5.8)	`Shift` + `F12`
Window Navigation Arrange windows - Realign	`Ctrl` + `Shift` + `H`
Mixer Move selected mixer track left/right	`Alt` + `Arrow Left` / `Arrow Right`
Mixer Select the channels linked to the selected mixer track	`Alt` + `L`
Mixer Link selected channels to selected mixer track	`Ctrl` + `L`
Mixer Link selected channels starting from selected mixer track	`Ctrl` + `Shift` + `L`
Mixer Rename selected mixer track	`F2`
Mixer Solo current track	`S`
Mixer Alt solo - activate current track and all tracks routed to/from it	`Alt` + `S`
Mixer Render armed tracks to .wav	`Alt` + `R`
Playlist Action Paint tool	`B`
Playlist Action Slice tool	`C`
Playlist Action Delete tool	`D`
Playlist Action Select tool	`E`
Playlist Action Pencil tool	`P`
Playlist Action Slip edit tool	`S`
Playlist Action Mute tool	`T`
Playlist Action Playback tool	`Y`
Playlist Action Zoom tool	`Z`
Playlist Action Bypass snap (very useful when combined with other modifiers)	`Alt`
Playlist Action Ungroup selection	`Alt` + `G`
Playlist Action Open the Piano Roll or channel depending on what's selected in the Playlist	`Alt` + `P`
Playlist Action Add time marker	`Alt` + `T`
Playlist Action Jump to next/previous song marker (if present)	`Alt` + `NumPad` `*` / `/`
Playlist Action Jump to next/previous song marker (if present) and select until next song marker (if present) or until song end	`Ctrl` + `Alt` + `NumPad` `*` / `/`
Playlist Action Audition the clip selected	`Alt` +Right Click
Playlist Action Engage snap free 'Slice Mode', release Alt after clicking on the clip to use snapping	`Alt` + `Right Shift`
Playlist Action Select all	`Ctrl` + `A`
Playlist Action Duplicate selection (or all clips in zoom range if nothing is selected) to the right	`Ctrl` + `B`
Playlist Action Copy selection	`Ctrl` + `C`
Playlist Action Deselect selection	`Ctrl` + `D`
Playlist Action Toggle Performance mode	`Ctrl` + `P`
Playlist Action Add time marker	`Ctrl` + `T`
Playlist Action Paste selection	`Ctrl` + `V`
Playlist Action Cut selection	`Ctrl` + `X`
Playlist Action Grid color	`Ctrl` + `Alt` + `G`
Playlist Action Toggle resizing from left	`Ctrl` + `Alt` + `Home`
Playlist Action Add space at the start of the timeline selection of equal length to the selection	`Ctrl` + `Insert`
Playlist Action Delete space according to the timeline selection	`Ctrl` + `Delete`
Playlist Action Select time around selection	`Ctrl` + `Enter`
Playlist Action Select time before/after selection equal to the selection length	`Ctrl` + `Arrow Left` / `Arrow Right`
Playlist Action Select	`Ctrl` +Left Click
Playlist Action Add to selection	`Ctrl` + `Shift` +Left Click
Playlist Action Zoom to selected clip	`Ctrl` + `Shift` +Right Click
Playlist Action Zoom on selection / Drag to make zoom selection (zoom on release)	`Ctrl` +Right Click
Playlist Action Delete selected clip/pattern source data	`Delete`
Playlist Action Open clip/pattern properties (e.g. Channel Settings, Piano Roll)	Double Left Click (on clip/pattern)
Playlist Action Move the playback marker to the start of the Playlist	`Home`
Playlist Action Slice clip at mouse cursor position	`Insert`
Playlist Action Add and resize clip/pattern (move mouse L/R after click and hold to resize) (must be in pencil mode)	`Left Shift` +Left Click (on Playlist)
Playlist Action Pan view	`Left Shift` +Right Click
Playlist Action Pan view (hold & drag left/right)	Middle Mouse Button
Playlist Action Zoom in / Zoom out	`PgUp` / `PgDn`
Playlist Action Swap to Brush	Pencil tool + `Shift`
Playlist Action Delete selected clip/pattern	Right Click
Playlist Action Slice clip/pattern (click above/below clip/pattern & drag vertical)	`Right Shift` +Left Click
Playlist Action Vertical slice clip (release Alt to engage snap)	`Right Alt` + `Right Shift` +Left Click
Playlist Action Slice clip/pattern & delete smallest part (click above/below clip/pattern & drag vertical)	`Right Shift` +Right Click
Playlist Action Quantize selected	`Right Alt` +Right Click
Playlist Action Mute selected	`Right Alt` +Left Click
Playlist Action Temporarily swaps between Paint & Draw modes	`Shift`
Playlist Action Select all clips according to the currently selected clip source	`Shift` + `C`
Playlist Action Group selected clips	`Shift` + `G`
Playlist Action Invert selection	`Shift` + `I`
Playlist Action Quick quantize clip start times	`Shift` + `Q`
Playlist Action Move selection left/right	`Shift` + `Arrow Left` / `Arrow Right`
Playlist Action Move selection up/down	`Shift` + `Arrow Up` / `Arrow Down`
Playlist Action Clone (drag while holding clip/pattern)	`Shift` +Left Click (on clip/pattern)
Playlist Action Nudge clip position	`Shift` +Mouse Wheel (on clips)
Playlist Action Reorder clip tracks	`Shift` +Mouse Wheel (on track label area)
Playlist Action Center Playlist to playhead position	`Shift` + `0` (zero)
Playlist Action Horizontal zoom levels 1 (zoom out) to 3 (zoom in)	`Shift` + `1` .. `3`
Playlist Action Horizontal zoom, show all	`Shift` + `4`
Playlist Action Zoom to selection	`Shift` + `5`
Playlist Action Fit Performance Zone to Playlist	`Shift` + `6`
Piano Roll Action Note: Some keyboard modifiers apply only to Draw mode
Piano Roll Action Paint tool	`B`
Piano Roll Action Slice tool	`C`
Piano Roll Action Delete tool	`D`
Piano Roll Action Select tool	`E`
Piano Roll Action Show next property in the Piano Roll event lane (lower section)	`F`
Piano Roll Action Toggle Keyboard view mode	`M`
Piano Roll Action Toggle Portamento	`O`
Piano Roll Action Pencil tool	`P`
Piano Roll Action Mute tool	`T`
Piano Roll Action Playback tool	`Y`
Piano Roll Action Zoom tool	`Z`
Piano Roll Action Bypass snap (very useful when combined with other modifiers)	`Alt`
Piano Roll Action Arpeggiator	`Alt` + `A`
Piano Roll Action View note helpers	`Alt` + `B`
Piano Roll Action Change color of selected notes (to selected color group)	`Alt` + `C`
Piano Roll Action Riff machine	`Alt` + `E`
Piano Roll Action Flam	`Alt` + `F`
Piano Roll Action Ungroup selected notes	`Alt` + `G`
Piano Roll Action Open Limit tool	`Alt` + `K`
Piano Roll Action Open Articulate tool	`Alt` + `L`
Piano Roll Action Switch waveform helper view (when available)	`Alt` + `N`
Piano Roll Action Open LFO tool when in lower Event Editor area	`Alt` + `O`
Piano Roll Action Quantize	`Alt` + `Q`
Piano Roll Action Open Randomize tool	`Alt` + `R`
Piano Roll Action Open Strum tool	`Alt` + `S`
Piano Roll Action Glue	`Alt` + `G`
Piano Roll Action Open Chop tool	`Alt` + `U`
Piano Roll Action Toggle ghost channels on/off	`Alt` + `V`
Piano Roll Action Open Claw Machine tool	`Alt` + `W`
Piano Roll Action Open Scale Levels tool	`Alt` + `X`
Piano Roll Action Open Score Flipper tool	`Alt` + `Y`
Piano Roll Action Change the selected note property of the note the mouse pointer is near or on	`Alt` +Mouse Wheel
Piano Roll Action Nudge the position of the selected notes or all notes if no selection is made	`Alt` + `Arrow Keys`
Piano Roll Action Select all	`Ctrl` + `A`
Piano Roll Action Duplicate selection, or all notes in zoom range if nothing is selected, to the right (works also with time line selections)	`Ctrl` + `B`
Piano Roll Action Copy selection	`Ctrl` + `C`
Piano Roll Action Deselect selection	`Ctrl` + `D`
Piano Roll Action Glue selected and touching notes	`Ctrl` + `G`
Piano Roll Action Insert current controller value	`Ctrl` + `I`
Piano Roll Action Quick legato	`Ctrl` + `L`
Piano Roll Action Import MIDI file	`Ctrl` + `M`
Piano Roll Action Quick quantize	`Ctrl` + `Q`
Piano Roll Action Quick chop	`Ctrl` + `U`
Piano Roll Action Paste selection	`Ctrl` + `V`
Piano Roll Action Cut selection	`Ctrl` + `X`
Piano Roll Action Grid color	`Ctrl` + `Alt` + `G`
Piano Roll Action Flip separator (since program version 11.5.8)	`Shift` + `Enter`
Piano Roll Action Toggle allow resizing from left	`Ctrl` + `Alt` + `Home`
Piano Roll Action Delete space equal to selection	`Ctrl` + `Delete`
Piano Roll Action Select time around selection	`Ctrl` + `Enter`
Piano Roll Action Insert space equal to the current time line selection	`Ctrl` + `Insert`
Piano Roll Action Slice & insert space (since program version 11.5.8)	`Ctrl` + `Alt` + `Insert`
Piano Roll Action Shift left/right	`Shift` + `Arrow Left` / `Arrow Right`
Piano Roll Action Rotate left/right (since program version 11.5.8)	`Ctrl` + `Shift` + `Arrow Left` / `Arrow Right`
Piano Roll Action Transpose selection up/down 1 octave	`Ctrl` + `Arrow Up` / `Arrow Down`
Piano Roll Action Select time before (left) or after (right) current selection	`Ctrl` + `Arrow Left` / `Arrow Right`
Piano Roll Action Select	`Ctrl` +Left Click
Piano Roll Action Add to selection	`Ctrl` + `Shift` +Left Click
Piano Roll Action Zoom on selection/Drag to make zoom selection (zoom on release)	`Ctrl` +Right Click
Piano Roll Action Delete selected	`Delete`
Piano Roll Action Open note properties	Double Left Click (on note)
Piano Roll Action Swap to ghost channel to edit the note	Double Right Click / X1 Button (on ghost note)
Piano Roll Action Add and resize notes (move mouse L/R after click and hold to resize)	`Left Shift` +Left Click (on Piano Roll)
Piano Roll Action Pan view	`Left Shift` +Right Click
Piano Roll Action Audio preview	`Left Alt` +Right Click
Piano Roll Action Pan view (hold and drag left/right)	Middle Mouse Button
Piano Roll Action Zoom in / Zoom out	`PgUp` / `PgDn`
Piano Roll Action Swap to Brush	Pencil tool + `Shift`
Piano Roll Action Delete selected notes	Right Click
Piano Roll Action Quantize selected	`Right Alt` +Right Click
Piano Roll Action Slice notes (click above/below note and drag vertical)	`Right Shift` +Left Click
Piano Roll Action Slice notes & delete smallest part (click above/below note and drag vertical)	`Right Shift` +Right Click
Piano Roll Action Group selected notes	`Shift` + `G`
Piano Roll Action Paste from MIDI clipboard	`Ctrl` + `Shift` + `V`
Piano Roll Action Temporarily swaps between Paint & Draw modes	`Shift`
Piano Roll Action Select by color	`Shift` + `C`
Piano Roll Action Select odd (since program version 11.5.8)	`Shift` + `O`
Piano Roll Action Discard selected note lengths	`Shift` + `D`
Piano Roll Action Group selected	`Shift` + `G`
Piano Roll Action Invert selection	`Shift` + `I`
Piano Roll Action Turn off selected chord	`Shift` + `N`
Piano Roll Action Quick quantize	`Shift` + `Q`
Piano Roll Action Select at random (multiple presses will select more notes)	`Shift` + `R`
Piano Roll Action Select more at random (since program version 11.5.8)	`Shift` + `M`
Piano Roll Action Move selection left/right	`Shift` + `Arrow Left` / `Arrow Right`
Piano Roll Action Move selection up/down	`Shift` + `Arrow Up` / `Arrow Down`
Piano Roll Action Clone (drag while holding clip/pattern), release Shift after dragging to unlock vertical movement	`Shift` +Left Click
Piano Roll Action Nudge clip position	`Shift` +Mouse Wheel (on clips)
Piano Roll Action Reorder clip tracks	`Shift` +Mouse Wheel (on track label area)
Piano Roll Action Center Playlist to playhead position	`Shift` + `0` (zero)
Piano Roll Action Horizontal zoom levels 1 (zoom out) to 3 (zoom in)	`Shift` + `1` .. `3`
Piano Roll Action Horizontal zoom, show all	`Shift` + `4`
Piano Roll Action Zoom to selection	`Shift` + `5`
Piano Roll Action Step sequencer mode zoom (since program version 11.5.8)	`Shift` + `6`
Piano Roll Action Time markers - Add one... (since program version 11.5.8)	`Alt` + `T`
Piano Roll Action Time markers - Add auto (since program version 11.5.8)	`Ctrl` + `T`