Cover every option in the help, the manual and the readme, and say what to install
An audit rather than a feature, prompted by wanting this fit to hand to somebody else. Five options had no command-line flag written down in the table the manual is generated from -- location, hold, schedules, tile_url and speed_unit -- so five flags that exist were missing from the manual. Four of them did exist under other names and are now recorded; hold had no flag at all and has one. Four switches could be turned off from the command line and not back on: --no-lookup, --no-basemap, --no-airports and --no-labels had no positive halves, so an option turned off in the saved settings could not be turned on again for one run. All four now have both. And adsb, which opens the window and draws a map when it stops, could not be given any of the settings that decide what those look like: no --at, no --radius, no --tiles, no --map-brightness, no --width, --fps, --trail, --fade, --stale, --airports or --labels. It takes all of them now. The manual had no list of the aircraft options at all -- the ADS-B sections were hand-written prose -- so five of them appeared nowhere in it. It now generates an AIRCRAFT OPTIONS section from the same table the menu and the flags come from, and the readme carries a table of all thirty-four with their flags and defaults. Three tests hold the three of them together: one that every option records its flag, one that every flag the table claims actually exists on a command, and one that the readme names them all. The installing instructions now list every dependency rather than only the optional ones: the four Python packages with their names in Debian, Fedora and Arch, and librtlsdr, which is a C library and therefore the one thing pip cannot bring and a virtual environment cannot supply. What reaches a network is written down too -- which host, when, and which file it is cached in -- since somebody installing this on a metered or air-gapped machine has to be able to see that nothing is fetched behind their back. build-repo.sh needs dpkg-dev and apt-utils, which a minimal system does not have, and now says so. Verified rather than asserted: a clean virtual environment, pip install from this tree, and a real log read back through the installed command. It pulls seven wheels rather than the four the page claimed, the other three being what Rich brings with it. Also: matplotlib is gone from the readme's dependency table, nothing having imported it; ffmpeg and Qt are in it, both having been missing; ffmpeg is a Suggests on the package; and resume.sh is ignored. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_016PsWPTweCT6pwxKngvVxcg
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The Dust Council
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.\" Generated by packaging/make-man.py -- do not edit by hand.
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.TH BANDSAUNTER 1 "2026-09-06" "bandsaunter 2026-09-06_02" "User Commands"
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.TH BANDSAUNTER 1 "2026-09-06" "bandsaunter 2026-09-06_03" "User Commands"
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.SH NAME
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bandsaunter \- scan, record and identify radio signals with an RTL-SDR
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.SH SYNOPSIS
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@ -1651,6 +1651,306 @@ instead goes straight to that option, and part of a name lists everything it
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could mean; a name that matches exactly wins outright, so "speed" reaches the
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setting called speed rather than that one and every other whose description
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mentions the word.
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.SS The card behind a box
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.BI \-\-box\-opacity " PERCENT"
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is how solid the card behind each information box is. The words beside an
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aircraft are readable over water and not over a city, so a card goes behind
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them: at nothing they sit straight on the map and at the whole way the map
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does not show through at all. An indexed picture cannot blend, so in the
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animation this darkens the ground under the box instead, which leaves the
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coastline faintly visible through it. The animated pictures had no card at all
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before, so nothing is what they used to look like.
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.PP
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The flag marking the receiver is drawn after everything else on both pictures
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\[em] after the aircraft, their trails and their boxes \[em] since it says
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where the receiver is standing and that is the one mark that must not end up
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behind an aeroplane that happened to fly over it. A vector theme's halo cannot
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cover it either, a halo only ever going on the ground, the grid and the
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background.
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.SH AIRCRAFT OPTIONS
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Every option the ADS-B side takes, in the six groups the menu shows them in.
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Each is a flag here and a line in the menu, and both come from one table in
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the program, so they cannot disagree.
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.SS Receiver
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.TP
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.B --device
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Receiver \[em] which receiver to use, when more than one is plugged in.
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.br
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Setting name \fBdevice\fR, default \fB0\fR.
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.br
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Accepts: at least 0.
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.TP
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.B --gain
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Gain \[em] tuner gain in dB, or automatic.
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.br
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Setting name \fBgain\fR, default \fBauto\fR.
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.TP
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.B --rate
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Sample rate \[em] how fast to sample; two megasamples a second is the minimum (Hz).
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.br
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Setting name \fBrate\fR, default \fB2 MHz\fR.
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.br
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Accepts: at least 2e+06.
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.TP
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.B --at
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Receiver at \[em] where the receiver is, as latitude,longitude (blank = work it out).
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.br
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Setting name \fBlocation\fR, default \fBblank\fR.
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.TP
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.B --simulate
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Invent a sky \[em] fly imaginary aircraft past an imaginary receiver.
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.br
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Setting name \fBsimulate\fR, default \fBno\fR.
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.RS
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.PP
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Turn this on to see what the whole thing does without hardware. Turn it off to hear real aircraft.
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.RE
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.TP
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.B --near
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Imaginary sky near \[em] where the simulated aircraft are flying.
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.br
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Setting name \fBnear\fR, default \fB47.55,-122.30\fR.
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.PP
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.SS Listening
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.TP
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.B --seconds
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Listen for \[em] how long to listen before stopping (0 = until interrupted) (s).
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.br
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Setting name \fBseconds\fR, default \fBuntil stopped\fR.
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.br
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Accepts: at least 0.
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.RS
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.PP
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Sixty seconds is enough to know whether aircraft are being heard. An evening of traffic wants no limit.
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.RE
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.TP
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.B --frames
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Show every frame \[em] print each frame as it arrives, rather than a running count.
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.br
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Setting name \fBframes\fR, default \fBno\fR.
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.TP
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.B --log / --no-log
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Write the log \[em] write every frame to a file as it arrives.
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.br
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Setting name \fBlog\fR, default \fByes\fR.
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.TP
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.B --kml
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Also write a KML \[em] write the flight paths for Google Earth as well.
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.br
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Setting name \fBkml\fR, default \fBno\fR.
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.TP
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.B --hold
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Keep on screen for \[em] how long an aircraft stays on the display after its last frame (s).
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.br
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Setting name \fBhold\fR, default \fB45 s\fR.
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.br
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Accepts: at least 1.
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.RS
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.PP
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Long enough that a gap in reception does not make rows jump about; short enough that the screen is the sky now.
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.RE
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.TP
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.B --map
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Draw when finished \[em] draw the map as soon as the listening stops.
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.br
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Setting name \fBdraw_after\fR, default \fBno\fR.
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.PP
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.SS Aircraft
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.TP
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.B --lookup / --no-lookup
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Look the aircraft up \[em] ask the public registers who each aircraft is.
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.br
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Setting name \fBlookup\fR, default \fByes\fR.
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.TP
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.B --schedules
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Schedule services \[em] which paid schedule services to ask, in order (blank = all with keys).
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.br
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Setting name \fBschedules\fR, default \fBblank\fR.
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.RS
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.PP
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Leave it blank unless you want one service tried before another. With no keys set, nothing changes.
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.RE
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.TP
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.B --recheck
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Check the positions \[em] throw out positions the aircraft could not have been in.
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.br
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Setting name \fBrecheck\fR, default \fBno\fR.
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.RS
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.PP
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Worth turning on for anything recorded before this version. Newer logs have the check applied as they are written, so it finds almost nothing.
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.RE
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.PP
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.SS Animation
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.TP
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.B --out
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Picture \[em] what kind of picture to draw.
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.br
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Setting name \fBpicture\fR, default \fBgif\fR.
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.br
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Accepts: one of: gif, mp4, png.
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.RS
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.PP
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Start with gif. Use png when you want one picture to look at or send.
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.RE
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.TP
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.B --seconds
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Animation length \[em] how long the animation should run for (s).
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.br
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Setting name \fBlength\fR, default \fB30 s\fR.
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.br
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Accepts: at least 1.
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.TP
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.B --speed
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Speed \[em] seconds of flying per second of animation (0 = fit to the length) (x).
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.br
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Setting name \fBspeed\fR, default \fBfit to the length\fR.
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.br
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Accepts: at least 0.
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.TP
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.B --fps
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Frames a second \[em] how many frames of animation each second holds.
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.br
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Setting name \fBfps\fR, default \fB12\fR.
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.br
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Accepts: at least 1.
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.TP
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.B --width
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Picture width \[em] how many pixels across the picture is (px).
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.br
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Setting name \fBwidth\fR, default \fB960 px\fR.
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.br
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Accepts: at least 160.
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.TP
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.B --trail
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Trail \[em] how much of the path to leave behind each aircraft (0 = all of it) (s).
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.br
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Setting name \fBtrail\fR, default \fBthe whole path\fR.
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.br
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Accepts: at least 0.
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.TP
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.B --fade
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Fade out over \[em] how long an aircraft takes to fade away once it has gone quiet (s).
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.br
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Setting name \fBfade\fR, default \fB20 s\fR.
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.br
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Accepts: at least 0.
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.RS
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.PP
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Long enough to notice, short enough that a busy sky is not half ghosts.
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.RE
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.TP
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.B --stale
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Forget after \[em] stop drawing an aircraft this long after its last report (s).
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.br
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Setting name \fBstale\fR, default \fB300 s\fR.
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.br
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Accepts: at least 1.
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.PP
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.SS The map
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.TP
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.B --basemap / --no-basemap
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Map underneath \[em] draw a real map under the flight paths.
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.br
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Setting name \fBbasemap\fR, default \fByes\fR.
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.RS
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.PP
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Turn it off for a picture with nothing but the tracks on it, or where there is no network and no cached tiles.
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.RE
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.TP
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.B --tiles
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Tile server \[em] where the map tiles come from.
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.br
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Setting name \fBtile_url\fR, default \fBblank\fR.
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.TP
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.B --theme
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Colour theme \[em] how the map looks: the colours, and whether the lines glow.
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.br
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Setting name \fBtheme\fR, default \fBnight\fR.
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.br
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Accepts: one of: night, digital, phosphor, amber, red.
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.RS
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.PP
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night to read it, the others to look at it.
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.RE
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.TP
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.B --map-brightness
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Map brightness \[em] how bright the map under the aircraft is drawn, as a percentage (%).
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.br
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Setting name \fBmap_brightness\fR, default \fB70 %\fR.
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.br
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Accepts: at least 10, at most 100.
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.RS
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.PP
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Turn it up until the coast and the roads are readable, and no further. On a vector theme it takes rather more turning up than on the default one.
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.RE
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.TP
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.B --radius
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Map radius \[em] how far around the receiver the map reaches (0 = fit whatever was heard).
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.br
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Setting name \fBradius\fR, default \fB100\fR.
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.br
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Accepts: at least 0.
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.RS
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.PP
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Set it to what your aerial can really hear. Zero goes back to fitting whatever turned up, mistakes and all.
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.RE
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.TP
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.B --airports / --no-airports
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Mark the airports \[em] mark every aerodrome on the map, not only the ones flown between.
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.br
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Setting name \fBairports\fR, default \fByes\fR.
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.RS
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.PP
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Turn it off for a picture with nothing but the aircraft on it, or where there is no network and nothing cached.
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.RE
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.TP
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.B --rings / --no-rings
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Range rings on the pictures \[em] faint discs at a quarter, a half and three quarters of the radius.
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.br
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Setting name \fBrings\fR, default \fByes\fR.
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.RS
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.PP
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Turn it off for a picture with nothing on it but the aircraft and the ground.
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.RE
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.TP
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.B --window-rings / --no-window-rings
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Range rings in the window \[em] the same discs on the realtime display.
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.br
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Setting name \fBwindow_rings\fR, default \fByes\fR.
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.RS
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.PP
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Turn it off if the window is busy enough already.
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.RE
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.PP
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.SS Labels
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.TP
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.B --box-opacity
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Box translucency \[em] how solid the card behind each information box is, as a percentage (%).
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.br
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Setting name \fBbox_opacity\fR, default \fB85 %\fR.
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.br
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Accepts: at least 0, at most 100.
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.RS
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.PP
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Turn it up over a busy map and down over an empty one.
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.RE
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.TP
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.B --labels / --no-labels
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Label the aircraft \[em] write the callsign, height and speed beside each aircraft.
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.br
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Setting name \fBlabels\fR, default \fByes\fR.
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.TP
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.B --speed-unit
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Speed in \[em] what to show speeds and distances in.
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.br
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Setting name \fBspeed_unit\fR, default \fBknots\fR.
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.br
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Accepts: one of: knots, mph, kph.
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.RS
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.PP
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knots is what aviation uses and what the aircraft actually said. mph or kph if that is what means something to you.
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.RE
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.PP
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.SS Range rings
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.B \-\-rings
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puts faint discs at a quarter, a half and three quarters of the radius,
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