OXI ELECTRONIC INSTRUMENTS One User manual

USER GUIDE
V 1.0

© OXI ELECTRONIC INSTRUMENTS SLU – 2021 – All rights reserved.
Polígono Industrial Porto do Molle
36350 Pontevedra
Spain
www.oxiinstruments.com
Information contained in this manual is subject to change without notice and does not represent a
commitment on the part of OXI ELECTRONIC INSTRUMENTS SLU, hereby OXI Instruments. The
software described in this manual is provided under the terms of a license agreement or
non-disclosure agreement. The software license agreement specifies the terms and conditions for its
lawful use. No part of this manual may be reproduced or transmitted in any form or by any purpose
other than purchaser’s personal use, without the express written permission of OXI INSTRUMENTS.
All other products, logos or company names quoted in this manual are trademarks or registered
trademarks of their respective owners.
Manual version: 1.0
Revision date: 3 January 2022
Product version: OXI ONE v1.0
Manufacturer: OXI Instruments
Specifications Subject to Change:
The information contained in this manual is believed to be correct at the time of printing. However, OXI
Instruments reserves the right to change or modify any of the specifications without notice or
obligation to update the hardware that has been purchased.
2

WELCOME
Thank you for purchasing OXI One.
This is the result of a couple musicians in need of a more inspiring sequencer.
By supporting us, you are helping to keep this instrument up to date and bring new features for a long
period of time and also to develop other instruments and tools that will come soon.
This is our Opera Prima and we hope you enjoy it as much as we did developing, broadcasting,
manufacturing and shipping it to your door.
–– OXI team
3

PRECAUTIONS
PLEASE READ CAREFULLY BEFORE PROCEEDING
* Please keep these precautions in a safe place for future reference.
Plug your unit to a USB power supply and do a full battery charge before using it for the first
time. The battery is fully charged when the icon stops blinking.
WARNING:
Always follow the basic precautions listed below to avoid the possibility of serious injury or even death
from electrical shock, short-circuiting, damages, fire or other hazards. These precautions include, but
are not limited to, the following:
●Do not open the instrument or attempt to disassemble the internal parts or modify them in any
way. The instrument contains no user-serviceable parts. If it should appear to be
malfunctioning, discontinue use immediately and have it inspected by qualified OXI
Instruments service personnel.
●Do not expose the instrument to rain, use it near water or in damp or wet conditions, or place
containers on it containing liquids which might spill into any openings.
●Use the specified cable provided by OXI Instruments only (or another one with same
specifications) to plug your OXI One to a computer or to charge OXI One’s battery.
●Use only a 5V supply to power or charge your OXI One. Using the wrong power supply will
damage your OXI One and it won’t be covered by the product warranty.
●Do not connect any TV or monitor to the Pipe interface (HDMI Micro connector) as this could
damage both devices. Use ONLY with compatible accessories like the OXI Pipe. Any damage
caused by a wrong operation won’t be covered by the product warranty.
●Do not connect any headphone or amplification line directly to any of the TRS jack plugs as
this may damage both devices. Any damage caused by a wrong operation won’t be covered
by the product warranty.
●Before cleaning the instrument, always remove the electric plug from the outlet. Never insert or
remove an electric plug with wet hands.
●Keep this product always out of reach of children. It is not a toy.
●The instrument, when used in combination with an amplifier, headphones or speakers, may be
able to produce sound levels that could cause permanent hearing loss. DO NOT operate for
long periods of time at a high level or at a level that is uncomfortable,or a level that exceeds
prevailing safety standards for hearing exposure. Always follow the basic precautions listed
below to avoid the possibility of serious injury or even death from electrical shock, damages,
fire or other risks. If you encounter any hearing loss or ringing in the ears, consult an
audiologist immediately. It is also a good idea to have your ears and hearing checked annually.
●Do not place the product and the cable charger near heat sources such as heaters or
radiators, and do not excessively bend or otherwise damage the cord, place heavy objects on
it, or place it in a position where anyone could walk on, trip over, or roll anything over it.
4

●When removing the cable charger from the instrument or an outlet, always hold the plug itself
and not the cord.
●Do not expose the instrument to excessive dust or vibrations, or extreme cold or heat (such as
in direct sunlight, near a heater, or in a car during the day) to prevent the possibility of damage
to the internal components.
●Do not place the instrument in an unstable position where it might accidentally fall over.
●Before moving the instrument, remove all connected cables.
●When cleaning the instrument, use a soft brush or a soft and dry cloth. Do not use paint
thinners, solvents, cleaning fluids, or chemical-impregnated wiping cloths. Also, do not place
vinyl or plastic objects on the instrument, since this might discolor the keyboard.
●Do not rest your weight on, or place heavy objects on the instrument, and do not use
excessive force on the buttons, switches or connectors.
●Do not operate the instrument for a long period of time at a high or uncomfortable volume
level, since this can cause permanent hearing loss. If you experience any hearing loss or
ringing in the ears, consult a physician.
●Always turn the power off when the instrument is not in use.
●The OXI One should not be exposed to water (dripping or splashing) and no objects filled with
liquids, such as vases, should be placed on the apparatus.
●Do not use the OXI One in conditions with extremely low air pressure.
OXI Instruments cannot be held responsible for damage caused by improper use or modifications to
the instrument, or data that is lost or destroyed.
5

INTRODUCTION
Along the journey of learning any new instrument, having access to a complete guide can be a very
valuable tool. You can rest assured knowing that all of the information needed to quickly get the most
out of your OXI One sequencer has been assembled here for convenient referencing.
Exploring a new instrument and manual for the first time can be very fun and informative indeed, but
take your time! There’s a lot going on in the OXI One and attempting to master every aspect of it
should not be the goal right off the bat. Feel free to gloss over this manual in its entirety or jump
straight to the chapters that excite you the most. If you’d prefer to figure things out on your own, no
problem! With OXI One, exploration is encouraged. The important thing is that you’re having fun! An
initial read-through of a manual can build a strong base of information that will be helpful moving
forward. This is when you’ll first become acquainted with the parameters of your new instrument; the
tools at your disposal and how they interact with each other.
Regardless of where you are on the journey to mastering the OXI One sequencer, this manual has
something to offer for every user level. Day 1 or day 1,000. Each subsequent read-through has the
potential to add upon the knowledge that you have obtained and invite you to dive in a bit deeper.
Has an update brought new features to explore and investigate? Perhaps you’d like to refresh your
memory on a feature that you haven’t used often? Revisiting a manual with a good understanding of
the base subject allows us to interpret the ideas and information within its pages differently, from a
more informed stance. This is when new doors start opening. We are now using the guide less as a
source for information and more as a source of inspiration.
ENJOY.
6

SPECIFICATIONS
Electrical specifications:
5V DC 1.7A (USB type C supply)
Li-Po Battery 2200mAh
Radio equipment:
Bluetooth 5.0, 2.4GHz, Tx Max: 4 dBm
Mechanical specifications:
Aluminum chassis & Silicone buttons
Dimensions: 36 x 13 x 3 cm
Weigth: 890 gr.
Operating temperature:
10 ºC to 36 ºC
INPUTS AND OUTPUTS
· USB C for 5V power and MIDI USB. It also charges the internal Li battery
· MIDI TRS input and output (Din adapter included)
· MIDI Bluetooth BLE 5.0 bidirectional, peripheral and central roles.
· CV 1 to 8. From -3V to 8V
· GATE 1 to 8. 5V or 10V configurable
· Clock Out and Clock/CV In (can be independent with a splitter)
INCLUDED IN THE PACKAGE
· USB C to A cable
· MIDI DIN to TRS adapter
7

INDEX
❏WELCOME
❏PRECAUTIONS
❏INTRODUCTION
❏SPECIFICATIONS
❏VERY QUICK START
❏Battery
❏SIGHT AND TOUCH
❏Grid
❏Screen
❏Sequencers
❏Encoders
❏FUNCTION BUTTONS
❏Transport
❏Recording Menu
❏Sync
❏Pages
❏Preview
❏Load and Save
❏Copy and Paste
❏Undo and Redo
❏Init, End and Loop
❏Y Div
❏Follow
❏Random
❏Random Generator
❏LFO
❏Configuration
❏LAYOUTS
❏Keyboard
❏ARP
❏CV Out
❏Trig Envelopes
❏MIDI to CV
❏CV to MIDI
❏Arranger
❏Clip Launch
❏CC Perform
❏Motion Recording
❏SEQUENCER MODES
❏Mono
❏Chord
❏Multitrack
8

VERY QUICK START
OXI One is a battery powered performative sequencer, controller and composition instrument that has
4 fully independent Sequencers that can be configured to any of the modes available that can play
simultaneously. Also, different aspects of OXI One can be configured so it adapts to your workflow,
not the other way around. Settings that are normally imposed are an option instead.
The interface in OXI One is based on horizontal movement between buttons, avoiding nested menus
thus making it very intuitive to use, not only without sacrificing functionality but adding innovative
layers for performance.
Turn ON your OXI One pressing the power button on the left side. You will be in the main view: the
Piano Roll or Sequencer layout. To start playing, press the Play button indeed. The transport bar
will start moving and loop on the grid. Be sure to have the selected Sequencer (1 to 4 buttons)
active. For this, press MUTE +1-4. The number button will blink white and blue indicating the
Sequencer is selected and active for playback. This is a nice way to launch or stop each Sequencer
from playback without stopping the rest.
–––––––––––––––––––––
You can edit each Sequencers toggling the view between them, by pressing their button 1-4
–––––––––––––––––––––
In this view the grid pads recognise two types of pulsation:
· Doing a short press-release, activates or deactivates steps.
· Making a long pulsation you will access the step parameters.
· SHIFT + press any step momentarily shows extra step parameters.
· A long (TIED) note can be entered by pressing two pads in the same row.
In general bottom to top is lower to higher note, and left to right the order in the time sequence. To
access higher and lower notes other than the 8 rows displayed, press the Division button and turn
the leftmost encoder
To select a Sequencer, press its corresponding button number; the Function buttons, the screen and
the grid will show the parameters of this selected sequencer.
SHIFT + Sequencer button (1-4) to enter its configuration, you can change the sequencer mode
between Mono,Chord,Polyphonic or Multitrack; also the color for that Sequencer, global MIDI
channel and quantization for punch-in. There will be more exciting modes to choose from in future
updates, subscribe to our newsletter to be up to date.
Note: some of the available colors may provide better visual feedback than others.
10

Each sequencer mode focuses on several tasks that it does best; for example, a Mono sequencer
has an instant visual feedback of the melody and more compositional centered tools, meanwhile in
Multitrack mode you have 8 mono tracks with instant mute and solo buttons per track. Chord mode
is a great tool to write the foundation chord progression of a song, meanwhile Polyphonic mode
offers total freedom up to 7 notes per step. We’ll cover more in detail how each works in the
Sequencer modes section.
–––––––––––––––––––––
It’s possible to have any combination of the existing sequencer modes
on the 4 available sequencer slots.
–––––––––––––––––––––
Turn OFF OXI One by holding the power button for at least 2 seconds. It will remember its last state
after the next startup: loaded project and configuration.
Clock settings won’t be remembered, auto-sync will be implemented in future firmware releases.
·BATTERY
The battery icon shows a rough estimation of the battery status.
The battery is charging when the icon is blinking, and fully charged when it is steady and not
blinking. The OXI One battery should last between 5 and 8 hours depending on the usage and the
LEDs consumption.
When the status icon is , it means that the battery voltage has dropped to around 3.7V which is
the nominal voltage of the battery. The OXI One will still have plenty of hours of use left.
11

SIGHT AND TOUCH
–––––––––––––––––––––
The information displayed by the following elements refers to the selected Sequencer.
–––––––––––––––––––––
·GRID
The grid has 128 RGB LED lit pads. On power up, the Piano Roll view is displayed. Here, each
column of pads represents a step of the sequence and each row represents a note (depending on
selected scale) or a track (in Multitrack mode). The grid also shows Keyboard,Arranger and CV Out
layouts that will be explained later.
Independently of the grid layout or screen menu, you can reach the main Piano Roll by pressing
BACK button. Other functions buttons like Keyboard or Arranger , will toggle between
their view and the main Sequencer view.
In Mono, Poly and Chord modes you can move the grid vertically in order to work with higher or lower
notes. To do so, go to the Division menu by pressing Division.The leftmost encoder then moves the
Piano Roll vertically one row at a time, one row being a grade of your scale or a semitone in
chromatic. The highlighted rows when scrolling indicate the position of the root note.
·SCREEN
The screen shows information or parameter values depending on the function button or mode
selected. The default view is the Sequencer view, shown on power up.
From left to right the top line indicates: active sequencer mode,
playback direction, swing, (track number in Multitrack mode), clock
source, BLE connection and battery state.
Second line: BPM and Sequencer time division or track time division
of the last selected track in the Multitrack mode.
Third line: scale, root note and global octave.
Specific screen interfaces will be later explained.
–––––––––––––––––––––
SHIFT. Hold it and press a button to access secondary functions,
the ones printed in turquoise.
–––––––––––––––––––––
12

·SEQUENCERS 1-4
Each number selects the displayed sequencer on the grid and the function buttons will show its
parameters.
MUTE +1-4 activates/deactivates the specific sequencer for playback.
It is possible to activate/deactivate several sequencers at once.
SHIFT + Sequencer button (1-4) to access the Sequencer Setup menu. From left to right you can
change:
Global MIDI channel of the Sequencer (it can be different per
track in Multitrack)
Punch-In quantization, it sets the countdown for the sequencer to
be launched (unMUTEd) when playback is active.
Sequencer Mode (Mono, Chord, Polyphonic and Multitrack)
Color for the sequencer notes on the grid, Piano Roll, Keyboard,
Patterns and Arranger Lanes
Each Sequencer (1 to 4) has their own dedicated interface and global parameters that are
configurable independently per Sequencer:
·Piano Roll view and pages
·MIDI channel configuration (up to 32 tracks on different channels, 32 channels available for the USB
output in two separated virtual ports and up to 48 MIDI channels using the OXI Split).
·Keyboard layout, designed for each mode
·Tracks, depending on mode
·16 Pattern slot memory per Sequencer (64 slots per Project)
·Arranger lanes (4)
·Scale
·Arpeggiator (per track)
·Loop (per track)
·Swing
·Randomizer engine
·Initial and End steps (per track)
·Time Division signature (per track)
·CC configuration (up to 8)
·LFO
13

·ENCODERS 1-4
They are the path to all parameter changes.
We will be referring from now on as “CW” to clockwise turns and “CCW” to counter clockwise turns of
the encoders.
In Sequencer view, the parameters each one modify apply to the selected Sequencer (1-4):
VELocity (secondary function: Tempo)
OCTave (secondary function: Swing)
GATE (secondary function: Scale)
MODulation (secondary function: Root)
Their value appears as a pop-up on the screen.
For most of the function buttons and secondary functions, the
screen will show 4 parameters, like the example on the right. The
encoders modify the corresponding parameter position on the
screen. For that, hold or click the function button, move the
encoders and press the encoder button to select value.
· Most parameters don’t require being selected by pressing
the encoder button, just release the function button or Shift after highlighting it on the screen. Some
require confirmation.
· Pressing the encoder button resets the corresponding parameter to its default value in most
of the menus.
Velocity
It changes the velocity value for all the steps of the selected Sequencer or currently selected
track in Multitrack. If there are different velocity values on steps, the screen will show the minimum and
maximum values. Turning the encoder offsets each step value.
If we press the VEL encoder button while we keep pressing a step button in the grid, the
velocity of the selected step is set to its default value.
Holding a grid button will show the Step menu, in which you can change the Velocity per step.
By holding several grid buttons and turning this knob, you can modify the velocity of them at once.
Velocity affects the amplitude of the AD trig envelope in CV Out by default.
14

Octave
By default, the octave is C 2. Turn the 2nd encoder to change the base octave for all the
sequence. This base octave serves as a reference point of the notes of the grid. This won’t affect the
octave value of the single steps.
Gate
This parameter sets the duration of the note, determined by the % of the total length of every
step depending on the selected division. Thus, if the sequence is set to 1/16th, and gate is 50, the
note will last half of a 1/16th note
Same as velocity, if there’s different gate values on steps, it shows maximum and minimum value. It
acts as a global control. After gate = 99 you have TIE and LEGato. Note that you can change this
parameter per step as well.
-TIE holds the current note for a number of steps. It can also be introduced by holding a step on the
grid and pressing another step on the same row depending on the desired length. Wait for the second
press (half of a second) in order to be recognized as a Tie, faster gestures toggles multipress selection
to edit several steps at once.
Tied steps are indicated with a white light. The steps must be on the same row and octave to be tied,
otherwise they would be considered as different notes.
-LEGato creates a smooth transition between consecutive notes, so there’s no time gap between
them.
Gate affects directly the Decay time of the AD trig envelope in CV Out.
MOD
Same as velocity and gate, MOD parameter shows minimum and maximum value if steps
have different values. By default MOD sends Mod Wheel messages. You can change this on the CC
Perform menus later explained.
Tempo
It affects all the Sequencers. To modify it, press Shift + turn the 1st encoder. The default
tempo value can be modified in the config menu. It only works when the OXI One is in INT (internal)
synchronization mode (see Synchronization section).
–––––––––––––––––––––
Press SHIFT + Play repeatedly to TAP the tempo to the desired beat.
–––––––––––––––––––––
15

Swing
Press SHIFT and turn the encoder 2 to modify it. Every sequence has its own Swing value.
Since every sequence may have it's different time signature or time division, the swing value must be
set carefully according to every sequence in order to get musical results. By pressing SHIFT and the
encoder 2 button, Swing is reset to default value, 50.
Scale
You can choose among several different scales, the notes in the corresponding Sequencer will
be quantized to the selected scale. Press SHIFT and turn encoder 3 to modify it. By pressing SHIFT
and the encoder 3 button, scale is set to the default value which is Chromatic.
There’s a very nice feature that we will cover in the HARMONIZER mode section, in which
notes in a Sequencer follow harmonically the notes of the chord played on another Sequencer. This
ensures that all your instruments stay not only in key but inversion too and follow your chord changes.
Root
The default root note is C, but we can easily change it by pressing SHIFT and turning encoder
4. As with the previous parameters, by pressing SHIFT and the encoder button, root is set to the
default value, C.
Both Scale and Root can be locked on the Configuration menu, this prevents any unwanted changes
to be made during a performance.
TIP: Jump to the Sequencer Mode section and skip the Function Buttons if you want to start working
with Mono, Chord, Multitrack or Polyphonic sequences right away. There are links to bookmarks to
help you navigate when a Function Button is mentioned.
However, reading the function buttons first helps to get familiar with the general workflow through all
the sequencers.
16

FUNCTION BUTTONS
· TRANSPORT
The following behavior applies to Internal Sync:
Rec enables recording from the Keyboard view or from any MIDI input..
Stop halts and resets all the Sequencers to step 1.
Play/Pause works as expected.
Recording: the sequencers will receive the incoming MIDI information depending on the
MIDI In channel filtering configuration option.
If MIDI In channel filtering is ON, every sequencer will listen to its own MIDI channel. If OFF, the
selected sequencer will listen to any channel.
Press Shift +Rec to access Recording Menu, parameters from left to right:
Countdown before starting recording. It only works when the active
sequencer is inactive. Otherwise it will start recording immediately.
Time Quantization. Percentage of quantization to the division of the
selected sequencer. To apply the quantization, a confirmation by
pressing the same encoder is required.
Overdub, recording behavior. If ON, the sequencer will keep the
already existing notes adding new ones. If OFF, the transport bar will delete the events of the
sequencer that are in its path.
Looping,1-Shot or Extend.
Three different behaviours that work as follows.
-Looping will continue recording events inside the actual track length; the initial and end steps
will remain unchanged.
-1-Shot will stop the recording once the transport bar reaches the final track step.
-Extend, the length of the track is increased until you stop the recording or the transport bar
reaches the maximum possible track size. This behavior allows MIDI Live Looping using
external MIDI input or the OXI One Keyboard layout.
· Long press Shift +Play for more than 3 seconds to take a rest from sequencing ;)
Shift +MUTE opens the Nudge menu - NOT IMPLEMENTED
In Config menu you can choose to enable Rec Listen, this way pressing Rec arms the track and start
recording once a note is activated, being in One Keyboard or any MIDI input - NOT IMPLEMENTED
17

Synchronisation:
When the OXI One starts up, Sequencer 1 is selected by default and Internal synchronization
mode is set.
The following sync options can be changed by tapping SHIFT +STOP (sync) button when the
sequencer is stopped:
-INT: OXI One follows internal timing, according to the selected tempo.
-USB: OXI One follows the clock timing received only through the MIDI USB port.
-MIDI: OXI One follows the clock timing received only through the MIDI TRS jack.
-BLE: OXI One follows the clock timing received only through the MIDI BLE. NOT
IMPLEMENTED, at the moment it’s the same as set to MIDI.
-CLK:OXI One follows the clock timing received through the clock input.
-AUTO:NOT IMPLEMENTED
OXI One reads and outputs MIDI clock according to a 24 ppq timing. The analog clock input
and output resolutions can be changed on Configuration.
When OXI One is synchronized with a DAW in which either
of them act as a master clock, remember to adjust the
MIDI clock sync delay in your DAW settings to correct
the latency generated by the DAW.
·PREVIEW
Shift +Preview activates/deactivates playback on the grid Piano Roll view when you press a step (or
change the chord type or the step note with an encoder), this way you get instant feedback through
MIDI and CV if configured, of notes and chords you add to the sequences.
· PAGES
Press 16,32,48 or 64 to select which step page the grid displays. To access the 80,96,114 and
128 pages, hold the corresponding Sequencer button (1-4) and desired page number or double tap
the page number: 16 will show 80, 32 96 and so on, the page button will be lit up in blue in this case.
Shift + Page moves the sequence on the grid according to the arrows displayed. Move the sequence
left, up, down and right one step at a time to rotate horizontally or transpose vertically.
18

· LOAD AND SAVE - Memory access
–––––––––––––––––––––
OXI One can store 15 Projects, each Project stores up to 16 Patterns per Sequencer,for a total
of 64 patterns per project. Each pattern stores all sequencer data, including its mode (Mono, Chord,
etc.), and different patterns for a sequencer can be for different modes. To save a sequence, hold the
Save button, Memory Access view for the current project will show up on the grid. This layout is
independent of the Sequencer you have selected.
The 4 top rows of pads of the grid show the Pattern slots per Sequencer. The slots are saved
individually per Sequencer per Pattern, not the 4 Sequencers at the same time in one Pattern.
Each Sequencer can load and play any of its 16 patterns independently of which pattern the other
sequencers are playing, so we’ve arranged the Memory Access with a matrix style correlation to tidy
up the structure.
Having many patterns displayed linearly is ugly and it’s easy to lose track. This way we have a better
laid out structure to address more patterns in an intuitive way, if you use it to your advantage.
–––––––––––––––––––––
In OXI One all loading events, being Pattern, Song or Project changes, are done without playback
interruption. Also when possible, the transport bar keeps its position.
This behavior virtually removes all boundaries of songs, patterns and steps limits.
–––––––––––––––––––––
19

Press any pad on the row of the selected Sequencer to save a sequence in the corresponding
Pattern slot.
IMPORTANT NOTES:
· Remember that each row stores the patterns for each sequencer. Upper row 1 = sequencer
1, row 2 = sequencer 2, etc.
· Every slot can store one pattern. The sequencer MODE (Mono, Chord, etc.) is part of the
stored data, so different patterns of the same sequencer could be in different modes. The sequencer
will automatically change its mode when the pattern is loaded.
· Other information like MIDI channel and CC assignments is also stored per pattern.
–––––––––––––––––––––
In order to maintain consistency between patterns, we recommend configuring everything necessary
such as MODE, MIDI channel and CC assignments in a first pattern. Then save this pattern in
successive memory slots as a template.
–––––––––––––––––––––
You can also save by turning the encoder 2to select a Pattern slot in the screen and press the
encoder button.
To load a Pattern hold Load button. The Memory access layout will show up in the grid. You can load
4 patterns (1 per Sequencer) on the grid INDEPENDENTLY of the selected sequencer (1-4). You can
also load by holding the Load button and turning the encoder 2to select a Pattern slot in the screen
and press the encoder button.
To Save a pattern, the procedure is the same as for loading but it’s only possible for the selected
sequencer to avoid unintentionally overwriting patterns from other sequencers. Saving a pattern
means that the information of the project like BPM and songs are also updated in the memory.
When a Pattern is loaded, any changes made to it won’t be saved unless done manually
To load a Project, hold the Load button and move encoder 1to highlight the target Project, then
push the encoder button.
To save a Project, hold the Save button and move encoder 1to highlight the target Project, then
push the encoder button. Saving a project means all 4 sequencer states and patterns will be saved,
plus the current BPM and all the arrangements/songs of the project.
20
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