REAPER 6.24

What's new in this version:

- Accessibility: improve labels for FX preset menu and edit comment buttons
- Accessibility: add textual fade descriptions to menus via accessibility APIs
- AIFF: support in24/42ni AIFC encoding
- Arrange view: display bracket over last selected track, to indicate where pasted content will go

Envelopes:
- add "remove envelope" menu item to envelope control panel context menu
- fix automation potentially lost when moving media items across tracks that do not have a matching FX envelope [p=2409245]
- fix automation items potentially left behind when moving media items across tracks
- improve snapping behavior for Audio Unit enum parameters
- support aliasing FX parameter from envelope control panel context menu

FX:
- add LV2 plug-in support
- add option to hide FX comment field in chain view
- support mousewheel processing for embedded FX if they have focus
- fix undo/redo display issues for FX comments
- limit generic UI vertical size to better fit on screen
- improve embedded FX update frequency when mouse-editing
- improve handling of embedded TCP/MCP controls for non-automatable parameters
- improve keyboard behavior with Waves StudioRack
- improve performance when automating parameters with the generic VST/AU GUI is open
- prevent creating envelopes for non-automatable parameters

- JSFX: fix bugs in IX/MIDI_KeyMap, MIDI_Variant, and MIDI_DuplicateFilter [t=181206] [p=1918238]
- JSFX: improve denormal filtering on win32 to match win64/other OSes
- JSFX: reduce memory use
- Loop sections: fix media item loop section mouse modifiers interaction with reversed media [t=249263]

macOS:
- improve Big Sur compatibility by forcing various windows to use Metal
- improve resolution of docker icon progress display during render
- fix launching Audio MIDI Setup on Big Sur
- fix video output flicker on recent macOS versions
- fix possible crash in menu editor on 10.14 [t=249194]
- Media explorer: action to insert media into active sample player looks for more recently active ReaSamplomatic5000 instance [t=249473]

- Media explorer: don't automatically re-scan empty files
- Media explorer: don't re-scan database files that contain no metadata [t=249280]
- Mixer: fix issues with themes that have very large master.mcp.size set [t=249171]
- Mute automation: fix automating active mute envelope from controller [t=247330]

Razor edit:
- add Razor Edit feature, to draw, move, copy, and transform selected areas of media and automation
- support moving/copying envelope areas based on envelope type or envelope lane via mouse modifiers
- when "move envelope points with items" enabled, hidden envelopes are included in area selections
- actions to insert MIDI item, empty item, click source use razor edit areas if they exist
- add option to always trim content behind razor edits
- add preference to stretch audio media items by either adding stretch markers or splitting
- display move guides when editing
- auto-crossfade media items at the edge of the razor edit area [p=2396178]
- support displaying overlapping media items in lanes
- when auto-creating FX parameter envelopes, initialize with the current parameter value [p=2409576]
- add basic API support
- add settings to snap razor edits to media items and automation items

ReaScript:
- allow EEL2 scripts to call third-party API functions without using extension_api()
- improve EEL2 extension_api() parameter count checking
- reduce memory use of EEL2 scripts
- fix IDE watch refresh when variable name changes [t=249408]
- support gfx_setcursor() during capture/without mousemove [t=249619]
- F1 in IDE gives context-sensitive help if possible
- optimize Lua calls to plug-in API registered functions
- add support for querying envelope GUID using GetSetEnvelopeInfo_String
- GetTrackEnvelopeByChunkName will also find envelopes by GUID

- Retina/HiDPI: improve knob appearance in ReaSamplomatic5000
- Routing diagram: fix pin display issues with 64 channel tracks
- ReaSamplomatic5000: support increasing max voices via controller/automation when UI is closed
- Theme: add cursor_seltrack.png image to customize selected track cursor bracket
- Theme: add theme color for selected track background
- Video: fix possible deadlock when rendering video [t=243142]
- VST3: support third-party embeddable UIs via new IReaperUIEmbedInterface interface
- Windows: 32-bit build is now compiled with VS2005/ICC
- Windows: add experimental asynchronous unbuffered disk write mode
- Windows: ignore hidden/system directories when scanning VST paths