Gate <Responsive> rendering on containerWidth > 0 so it only mounts after
ResizeObserver has measured the container. Use availableWidth directly as
the width prop (no window.innerWidth fallback) since the component now only
renders when containerWidth is known. This prevents the grid from rendering
wider than its container (which caused the rightmost column to overflow the
right edge).
https://claude.ai/code/session_01H1sqbcFmtwwsdNTJcJHJWd
availableWidth starts at 0 (not null/undefined) before ResizeObserver fires.
The ?? operator passes 0 through instead of falling back to window.innerWidth,
making cellHeight negative and causing react-grid-layout to render a ~10px
container. The overflow-x-hidden div then becomes an implicit scroll container,
producing the 'cards squeezed in a small rectangle' symptom.
Changing ?? to || makes 0 trigger the window.innerWidth fallback, giving a
reasonable initial rowHeight until the real container width is measured.
https://claude.ai/code/session_01H1sqbcFmtwwsdNTJcJHJWd
VideoPreview's <video> had aspect-video + size-full, but size-full overrides
the aspect-ratio constraint, leaving object-fit at the default fill.
Adding object-contain preserves the video's natural aspect ratio in event cards.
https://claude.ai/code/session_01EwdaKGsrRLZ74smmCQ1MgW
PreviewVideoPlayer's <video> had no explicit object-fit, so browsers
applied the CSS default (fill), stretching the video when the container
aspect ratio (detect resolution) didn't match the actual preview video.
Adding object-contain preserves aspect ratio in the recording/history view.
https://claude.ai/code/session_01EwdaKGsrRLZ74smmCQ1MgW
Grid tiles explicitly set --frigate-mse-object-fit:fill so video stretches
to fill the card without preserving aspect ratio. The MsePlayer default
is contain, so History preview and all other contexts keep correct proportions.
https://claude.ai/code/session_01EwdaKGsrRLZ74smmCQ1MgW
The MSE player default was set to 'fill' which stretches video in all contexts.
Only the draggable grid should use 'cover' (via --frigate-mse-object-fit:cover).
Changing the fallback to 'contain' restores aspect-ratio-preserving behaviour
everywhere else (History preview, etc.) while keeping the grid fill intact.
https://claude.ai/code/session_01EwdaKGsrRLZ74smmCQ1MgW
* add shm frame lifetime calculation and update UI for shared memory metrics
* consistent sizing on activity indicator in save buttons
* fix offline overlay overflowing on mobile when in grid mode
* refactor websockets to remove react-tracked
react 19 removed useReducer eager bailout, which broke react-tracked.
react-tracked works by wrapping state in a JavaScript Proxy. When a component reads state.someField, the proxy records that access. On the next state update, it compares only the fields each component actually touched and skips re-renders if those fields are unchanged. Under the hood, this relies on useReducer — and in React 18, useReducer had an "eager bail-out" that short-circuited rendering when the new state was === to the old state. React 19 removed that optimization, so every dispatch now schedules a render regardless, and the proxy comparison runs too late to prevent it.
useSyncExternalStore is a React primitive (added in 18, stable in 19) designed for exactly this pattern: subscribing to an external store:
useSyncExternalStore(
subscribe, // (listener) => unsubscribe — called when the store changes
getSnapshot // () => value — returns the current value for this subscriber
)
React calls getSnapshot during render and compares the result with Object.is. If the value is the same reference, the component bails out — no re-render. The key difference from react-tracked is that this bail-out is built into React's reconciler, not bolted on via proxy tricks and useReducer.
The per-topic subscription model makes this efficient. Instead of one global store where every subscriber has to check if their fields changed, each useWs("some/topic", ...) call subscribes only to that topic's listener set. When a message arrives for front_door/detect/state, only components subscribed to that exact topic get their listener fired → React calls their getSnapshot → Object.is compares the value → bail-out if unchanged. Components watching back_yard/detect/state are never even notified.
* remove react-tracked and react-use-websocket
* refactor usePolygonStates to use ws topic subscription
* fix TimeAgo refresh interval always returning 1s due to unit mismatch (seconds vs milliseconds)
older events now correctly refresh every minute/hour instead of every second
* simplify
* clean up
* don't resend onconnect
* clean up
* remove patch
Currently translated at 24.7% (268 of 1084 strings)
Translated using Weblate (Cantonese (Traditional Han script))
Currently translated at 63.5% (297 of 467 strings)
Translated using Weblate (Cantonese (Traditional Han script))
Currently translated at 100.0% (58 of 58 strings)
Translated using Weblate (Cantonese (Traditional Han script))
Currently translated at 100.0% (230 of 230 strings)
Translated using Weblate (Cantonese (Traditional Han script))
Currently translated at 86.9% (147 of 169 strings)
Added translation using Weblate (Cantonese (Traditional Han script))
Update translation files
Updated by "Squash Git commits" add-on in Weblate.
Added translation using Weblate (Cantonese (Traditional Han script))
Added translation using Weblate (Cantonese (Traditional Han script))
Translated using Weblate (Cantonese (Traditional Han script))
Currently translated at 0.2% (1 of 464 strings)
Added translation using Weblate (Cantonese (Traditional Han script))
Co-authored-by: Hosted Weblate <hosted@weblate.org>
Co-authored-by: Languages add-on <noreply-addon-languages@weblate.org>
Co-authored-by: beginner2047 <leoywng44@gmail.com>
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/common/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/common/yue_Hant/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/components-dialog/yue_Hant/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/config-cameras/yue_Hant/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/config-global/yue_Hant/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/views-system/yue_Hant/
Translation: Frigate NVR/Config - Cameras
Translation: Frigate NVR/Config - Global
Translation: Frigate NVR/common
Translation: Frigate NVR/components-dialog
Translation: Frigate NVR/views-system
Update translation files
Updated by "Squash Git commits" add-on in Weblate.
Added translation using Weblate (Korean)
Added translation using Weblate (Korean)
Added translation using Weblate (Korean)
Translated using Weblate (Korean)
Currently translated at 86.2% (50 of 58 strings)
Translated using Weblate (Korean)
Currently translated at 99.5% (227 of 228 strings)
Co-authored-by: Hosted Weblate <hosted@weblate.org>
Co-authored-by: John <john@akfn.net>
Co-authored-by: Languages add-on <noreply-addon-languages@weblate.org>
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/common/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/common/ko/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/components-dialog/ko/
Translation: Frigate NVR/common
Translation: Frigate NVR/components-dialog
Update translation files
Updated by "Squash Git commits" add-on in Weblate.
Added translation using Weblate (Persian)
Added translation using Weblate (Persian)
Added translation using Weblate (Persian)
Translated using Weblate (Persian)
Currently translated at 99.0% (215 of 217 strings)
Co-authored-by: Amir reza Irani ali poor <amir1376irani@yahoo.com>
Co-authored-by: Hosted Weblate <hosted@weblate.org>
Co-authored-by: Languages add-on <noreply-addon-languages@weblate.org>
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/common/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/common/fa/
Translation: Frigate NVR/common
Update translation files
Updated by "Squash Git commits" add-on in Weblate.
Added translation using Weblate (Swedish)
Added translation using Weblate (Swedish)
Added translation using Weblate (Swedish)
Translated using Weblate (Swedish)
Currently translated at 96.5% (56 of 58 strings)
Translated using Weblate (Swedish)
Currently translated at 92.5% (136 of 147 strings)
Translated using Weblate (Swedish)
Currently translated at 95.1% (217 of 228 strings)
Co-authored-by: Hosted Weblate <hosted@weblate.org>
Co-authored-by: Languages add-on <noreply-addon-languages@weblate.org>
Co-authored-by: ThomasW <thomas.wursig@remote24.se>
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/common/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/common/sv/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/components-dialog/sv/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/views-system/sv/
Translation: Frigate NVR/common
Translation: Frigate NVR/components-dialog
Translation: Frigate NVR/views-system
Currently translated at 0.1% (1 of 1082 strings)
Translated using Weblate (French)
Currently translated at 4.0% (1 of 25 strings)
Translated using Weblate (French)
Currently translated at 4.5% (1 of 22 strings)
Added translation using Weblate (French)
Update translation files
Updated by "Squash Git commits" add-on in Weblate.
Added translation using Weblate (French)
Added translation using Weblate (French)
Translated using Weblate (French)
Currently translated at 80.4% (720 of 895 strings)
Translated using Weblate (French)
Currently translated at 99.5% (227 of 228 strings)
Translated using Weblate (French)
Currently translated at 33.1% (154 of 464 strings)
Translated using Weblate (French)
Currently translated at 100.0% (147 of 147 strings)
Added translation using Weblate (French)
Translated using Weblate (French)
Currently translated at 100.0% (58 of 58 strings)
Translated using Weblate (French)
Currently translated at 100.0% (23 of 23 strings)
Translated using Weblate (French)
Currently translated at 93.8% (138 of 147 strings)
Translated using Weblate (French)
Currently translated at 96.4% (220 of 228 strings)
Translated using Weblate (French)
Currently translated at 81.0% (716 of 883 strings)
Co-authored-by: Apocoloquintose <bertrand.moreux@gmail.com>
Co-authored-by: Hosted Weblate <hosted@weblate.org>
Co-authored-by: Languages add-on <noreply-addon-languages@weblate.org>
Co-authored-by: eepy-furry <eepy-furry@users.noreply.hosted.weblate.org>
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/common/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/common/fr/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/components-dialog/fr/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/config-cameras/fr/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/config-global/fr/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/config-groups/fr/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/config-validation/fr/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/views-exports/fr/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/views-settings/fr/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/views-system/fr/
Translation: Frigate NVR/Config - Cameras
Translation: Frigate NVR/Config - Global
Translation: Frigate NVR/Config - Groups
Translation: Frigate NVR/Config - Validation
Translation: Frigate NVR/common
Translation: Frigate NVR/components-dialog
Translation: Frigate NVR/views-exports
Translation: Frigate NVR/views-settings
Translation: Frigate NVR/views-system
Currently translated at 2.9% (14 of 467 strings)
Translated using Weblate (Spanish)
Currently translated at 73.9% (17 of 23 strings)
Translated using Weblate (Spanish)
Currently translated at 72.1% (660 of 915 strings)
Translated using Weblate (Spanish)
Currently translated at 83.4% (141 of 169 strings)
Translated using Weblate (Spanish)
Currently translated at 56.0% (14 of 25 strings)
Translated using Weblate (Spanish)
Currently translated at 69.5% (16 of 23 strings)
Translated using Weblate (Spanish)
Currently translated at 73.1% (655 of 896 strings)
Translated using Weblate (Spanish)
Currently translated at 2.8% (13 of 464 strings)
Translated using Weblate (Spanish)
Currently translated at 1.7% (19 of 1082 strings)
Translated using Weblate (Spanish)
Currently translated at 63.6% (14 of 22 strings)
Translated using Weblate (Spanish)
Currently translated at 0.8% (9 of 1082 strings)
Translated using Weblate (Spanish)
Currently translated at 65.2% (15 of 23 strings)
Translated using Weblate (Spanish)
Currently translated at 81.0% (137 of 169 strings)
Translated using Weblate (Spanish)
Currently translated at 28.0% (7 of 25 strings)
Translated using Weblate (Spanish)
Currently translated at 1.0% (5 of 464 strings)
Translated using Weblate (Spanish)
Currently translated at 31.8% (7 of 22 strings)
Added translation using Weblate (Spanish)
Update translation files
Updated by "Squash Git commits" add-on in Weblate.
Added translation using Weblate (Spanish)
Added translation using Weblate (Spanish)
Added translation using Weblate (Spanish)
Co-authored-by: Gerard Ricart Castells <gerard.ricart@gmail.com>
Co-authored-by: Hosted Weblate <hosted@weblate.org>
Co-authored-by: Jorge Sandi <jorensanbar+weblate@gmail.com>
Co-authored-by: Languages add-on <noreply-addon-languages@weblate.org>
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/common/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/config-cameras/es/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/config-global/es/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/config-groups/es/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/config-validation/es/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/views-exports/es/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/views-settings/es/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/views-system/es/
Translation: Frigate NVR/Config - Cameras
Translation: Frigate NVR/Config - Global
Translation: Frigate NVR/Config - Groups
Translation: Frigate NVR/Config - Validation
Translation: Frigate NVR/common
Translation: Frigate NVR/views-exports
Translation: Frigate NVR/views-settings
Translation: Frigate NVR/views-system
Currently translated at 13.7% (64 of 464 strings)
Translated using Weblate (Dutch)
Currently translated at 13.5% (63 of 464 strings)
Translated using Weblate (Dutch)
Currently translated at 4.7% (51 of 1082 strings)
Added translation using Weblate (Dutch)
Update translation files
Updated by "Squash Git commits" add-on in Weblate.
Added translation using Weblate (Dutch)
Added translation using Weblate (Dutch)
Added translation using Weblate (Dutch)
Translated using Weblate (Dutch)
Currently translated at 100.0% (58 of 58 strings)
Translated using Weblate (Dutch)
Currently translated at 100.0% (23 of 23 strings)
Translated using Weblate (Dutch)
Currently translated at 74.9% (671 of 895 strings)
Translated using Weblate (Dutch)
Currently translated at 93.1% (137 of 147 strings)
Co-authored-by: Hosted Weblate <hosted@weblate.org>
Co-authored-by: Languages add-on <noreply-addon-languages@weblate.org>
Co-authored-by: Marijn <168113859+Marijn0@users.noreply.github.com>
Co-authored-by: Paul Bröerken <broerken@me.com>
Co-authored-by: marcel vanrooden <marcelvanrooden@gmail.com>
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/common/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/components-dialog/nl/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/config-cameras/nl/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/config-global/nl/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/views-exports/nl/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/views-settings/nl/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/views-system/nl/
Translation: Frigate NVR/Config - Cameras
Translation: Frigate NVR/Config - Global
Translation: Frigate NVR/common
Translation: Frigate NVR/components-dialog
Translation: Frigate NVR/views-exports
Translation: Frigate NVR/views-settings
Translation: Frigate NVR/views-system
Update translation files
Updated by "Squash Git commits" add-on in Weblate.
Added translation using Weblate (Italian)
Added translation using Weblate (Italian)
Added translation using Weblate (Italian)
Translated using Weblate (Italian)
Currently translated at 100.0% (228 of 228 strings)
Translated using Weblate (Italian)
Currently translated at 100.0% (58 of 58 strings)
Translated using Weblate (Italian)
Currently translated at 100.0% (23 of 23 strings)
Translated using Weblate (Italian)
Currently translated at 100.0% (147 of 147 strings)
Co-authored-by: Gringo <ita.translations@tiscali.it>
Co-authored-by: Hosted Weblate <hosted@weblate.org>
Co-authored-by: Languages add-on <noreply-addon-languages@weblate.org>
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/common/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/common/it/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/components-dialog/it/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/views-exports/it/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/views-system/it/
Translation: Frigate NVR/common
Translation: Frigate NVR/components-dialog
Translation: Frigate NVR/views-exports
Translation: Frigate NVR/views-system
Update translation files
Updated by "Squash Git commits" add-on in Weblate.
Added translation using Weblate (Portuguese)
Added translation using Weblate (Portuguese)
Translated using Weblate (Portuguese)
Currently translated at 89.6% (52 of 58 strings)
Added translation using Weblate (Portuguese)
Translated using Weblate (Portuguese)
Currently translated at 89.6% (52 of 58 strings)
Translated using Weblate (Portuguese)
Currently translated at 90.7% (49 of 54 strings)
Translated using Weblate (Portuguese)
Currently translated at 29.5% (36 of 122 strings)
Translated using Weblate (Portuguese)
Currently translated at 43.4% (10 of 23 strings)
Co-authored-by: Abel Nunes <lidh08@gmail.com>
Co-authored-by: Hellyson Rodrigo Parteka <hellysonrp@gmail.com>
Co-authored-by: Hosted Weblate <hosted@weblate.org>
Co-authored-by: Languages add-on <noreply-addon-languages@weblate.org>
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/common/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/components-dialog/pt/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/views-classificationmodel/pt/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/views-exports/pt/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/views-facelibrary/pt/
Translation: Frigate NVR/common
Translation: Frigate NVR/components-dialog
Translation: Frigate NVR/views-classificationmodel
Translation: Frigate NVR/views-exports
Translation: Frigate NVR/views-facelibrary
Currently translated at 100.0% (915 of 915 strings)
Translated using Weblate (Catalan)
Currently translated at 100.0% (59 of 59 strings)
Translated using Weblate (Catalan)
Currently translated at 100.0% (1084 of 1084 strings)
Translated using Weblate (Catalan)
Currently translated at 100.0% (905 of 905 strings)
Translated using Weblate (Catalan)
Currently translated at 100.0% (467 of 467 strings)
Translated using Weblate (Catalan)
Currently translated at 100.0% (464 of 464 strings)
Translated using Weblate (Catalan)
Currently translated at 100.0% (1082 of 1082 strings)
Translated using Weblate (Catalan)
Currently translated at 100.0% (1082 of 1082 strings)
Translated using Weblate (Catalan)
Currently translated at 100.0% (464 of 464 strings)
Translated using Weblate (Catalan)
Currently translated at 100.0% (1082 of 1082 strings)
Translated using Weblate (Catalan)
Currently translated at 100.0% (464 of 464 strings)
Translated using Weblate (Catalan)
Currently translated at 90.6% (981 of 1082 strings)
Translated using Weblate (Catalan)
Currently translated at 46.3% (502 of 1082 strings)
Translated using Weblate (Catalan)
Currently translated at 100.0% (230 of 230 strings)
Translated using Weblate (Catalan)
Currently translated at 100.0% (169 of 169 strings)
Translated using Weblate (Catalan)
Currently translated at 100.0% (25 of 25 strings)
Translated using Weblate (Catalan)
Currently translated at 100.0% (138 of 138 strings)
Translated using Weblate (Catalan)
Currently translated at 100.0% (22 of 22 strings)
Translated using Weblate (Catalan)
Currently translated at 100.0% (896 of 896 strings)
Translated using Weblate (Catalan)
Currently translated at 20.6% (223 of 1082 strings)
Update translation files
Updated by "Squash Git commits" add-on in Weblate.
Added translation using Weblate (Catalan)
Added translation using Weblate (Catalan)
Added translation using Weblate (Catalan)
Translated using Weblate (Catalan)
Currently translated at 100.0% (464 of 464 strings)
Translated using Weblate (Catalan)
Currently translated at 100.0% (136 of 136 strings)
Translated using Weblate (Catalan)
Currently translated at 100.0% (895 of 895 strings)
Translated using Weblate (Catalan)
Currently translated at 100.0% (118 of 118 strings)
Added translation using Weblate (Catalan)
Translated using Weblate (Catalan)
Currently translated at 100.0% (895 of 895 strings)
Translated using Weblate (Catalan)
Currently translated at 100.0% (228 of 228 strings)
Translated using Weblate (Catalan)
Currently translated at 100.0% (23 of 23 strings)
Translated using Weblate (Catalan)
Currently translated at 100.0% (58 of 58 strings)
Translated using Weblate (Catalan)
Currently translated at 100.0% (122 of 122 strings)
Translated using Weblate (Catalan)
Currently translated at 100.0% (883 of 883 strings)
Translated using Weblate (Catalan)
Currently translated at 100.0% (147 of 147 strings)
Co-authored-by: Eduardo Pastor Fernández <123eduardoneko123@gmail.com>
Co-authored-by: Hosted Weblate <hosted@weblate.org>
Co-authored-by: Josh Hawkins <joshhawk2003@yahoo.com>
Co-authored-by: Languages add-on <noreply-addon-languages@weblate.org>
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/common/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/common/ca/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/components-dialog/ca/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/config-cameras/ca/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/config-global/ca/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/config-groups/ca/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/config-validation/ca/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/objects/ca/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/views-classificationmodel/ca/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/views-events/ca/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/views-explore/ca/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/views-exports/ca/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/views-settings/ca/
Translate-URL: https://hosted.weblate.org/projects/frigate-nvr/views-system/ca/
Translation: Frigate NVR/Config - Cameras
Translation: Frigate NVR/Config - Global
Translation: Frigate NVR/Config - Groups
Translation: Frigate NVR/Config - Validation
Translation: Frigate NVR/common
Translation: Frigate NVR/components-dialog
Translation: Frigate NVR/objects
Translation: Frigate NVR/views-classificationmodel
Translation: Frigate NVR/views-events
Translation: Frigate NVR/views-explore
Translation: Frigate NVR/views-exports
Translation: Frigate NVR/views-settings
Translation: Frigate NVR/views-system
