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This catalogue is maintained manually and therefore may not include all available icons. Refer to Category:BSicon/railway for a complete catalog of all railway icons. (Road and waterway icons are here and here respectively.)

The original list was split into smaller sub-lists due to it taking too long to load all the icons. Editors may create new sub-lists if the existing sub-lists become too long or are unsuitable for including the desired icon. See here for the pre-split list.

The basic diagrams are primarily used to show

  • existing track
     /  dark color
vs. disused/planned track
 /  light color
  • heavy rail
vs. light rail/rapid transit
  • normal track
vs. elevated track
  grey borders
vs. tunnel track
  • watered canals
vs. unwatered canals

Note that the number of lines (tracks) is not normally shown in diagrams, except in depictions of small areas such as stations and individual light rail/tram lines.


BSicons are generally named logically, and different icon names can often be modified in the same way. Some examples:

BSicon STR.svg
BSicon BHF.svg
BSicon uHST.svg
BSicon exSTR.svg
BSicon exBHF.svg
BSicon uexHST.svg
N/A BSicon eBHF.svg
BSicon ueHST.svg
BSicon hSTR.svg
BSicon hBHF.svg
BSicon uhHST.svg
BSicon tSTR.svg
BSicon tBHF.svg
BSicon utHST.svg
N/A BSicon etBHF.svg
BSicon uetHST.svg
BSicon ENDEa.svg
BSicon ENDExa.svg
BSicon ENDEe.svg
BSicon ENDExe.svg
BSicon KBHFa.svg
BSicon KBHFxa.svg
BSicon KBHFe.svg
BSicon KBHFxe.svg

BSicon tSTRa.svg
BSicon hSTRa.svg
BSicon tSTRe.svg
BSicon hSTRe.svg
BSicon STR.svg
BSicon ACC.svg
BSicon uINT.svg
BSicon STRq.svg
BSicon ACCq.svg
BSicon uINTq.svg
BSicon STR2.svg
BSicon ACC2.svg
BSicon uINT2.svg
BSicon STR3.svg
BSicon ACC3.svg
BSicon uINT3.svg
BSicon STR+1.svg
BSicon ACC+1.svg
BSicon uINT+1.svg
BSicon STR+4.svg
BSicon ACC+4.svg
BSicon uINT+4.svg
BSicon STR+r.svg
BSicon ACC+r.svg
BSicon uINT+r.svg
BSicon STRc2.svg
BSicon STRc3.svg
BSicon tSTRc1.svg
BSicon tSTRc4.svg

BSicon STRl.svg
BSicon STRr.svg
BSicon STR+l.svg
BSicon STR+r.svg
BSicon CONTg.svg
BSicon HSTg.svg
BSicon CONTf.svg
BSicon HSTf.svg

Naming logic[edit]

This system of icon names was originally created on the German Wikipedia in 2006, and has since been expanded by editors on different projects. Consequently, most icon names are derived from German, and the rest from English and Dutch.

BSicon files are named File:BSicon pictogram-ID.svg. (The ID of an icon is entered (without "BSicon") into {{Routemap}} or into the {{BS-map}} helper templates. Usage instructions for those templates are at Template:Routemap and w:en:WP:RDT respectively.) The ID is constructed from a root, usually with prefixes and suffixes (e.g.   (tKBHFa) refers to a pictogram derived from t+K+BHF+a). Prefixes and suffixes are mostly lowercase, but the root is all caps (capital letters), with only a few exceptions. All icons contain at least one root,[a] and sometimes two or more are combined to form complex icons. Affixes generally modify the "base" icon in color, directionality, structure, etc., and may not be necessary for simple icons.


The prefixes generally indicate the status of the infrastructure.

Zero or one of these prefixes:
(none) u f g
U-Bahn / underground footpath ground
heavy rail
e.g. metro, light rail or canal
footpath or hiking trail
unwatered canal
followed by zero or more of:
e x m
ehemals / erstwhile ex Mischbetrieb / mixed
closed, under construction, or planned (secondary track, station,stop or other feature)
closed, under construction, or planned (main track or feature)
indicates that the icon contains more than one type of line or colour in the same pictogram (see below)[b]
then optionally one or more of:
l h t p n
Legende / legend Hochbahn / high level Tunnelstrecke / tunnel passed eng / narrow
symbol for legends / overlaying
elevated line
underground line
passed by express services
thin (half-width) line
followed by none or exactly one of these prefixes:
c d cd b
schmal / compact dünn / demi c + d breit / broad
quarter-width symbols
half-width symbols
three-quarter-width symbols
double-width symbols
then optionally one or more of:
k v 3 C D L M
kombination (4-column) from the BSicon SPLe.svg transition between double and single lines 3-column Cutt / cutting Damm Lücke (leak) Maske / mask
compound turn[c]
symbols showing close parallel lines (same as two paired d symbols)
compound turn
open cut line
line on embankment
interruption to line[d]
symbol for masks and masked icons

The standard order is

"u" · "f" · "g" – prefixes concerning the type of the track are first;
"e" · "x" · "m" – prefixes concerning the status of the track are next;[b]
"l" · "h" · "t" · "p" · "k" · "n" – prefixes concerning the elevation of the track follow;[e]
"c" · "d" · "b" · "v" – prefixes concerning size of icon are fourth;
"C" · "D" · "L" · "M" · "3" – root modifiers are last.[e]
Heavy rail /
Example Metro /
Light rail
Track, station or facility in use (no prefix)    
Station passed by express train p    up   
Primary (usually vertical) track out of use,
secondary (usually branching or crossing) track in use
x    ux   
Primary track in use, feature or secondary track out of use e    ue   
Entire icon is out of use (with some exceptions) ex    
Primary (usually vertical) track or station in tunnel;
secondary track(s) or feature may or may not
be in tunnel as well, see also suffix t
t     ut    
xt    uxt   
et    uet   
ext     uext    
Primary (usually vertical) track or station elevated;
secondary track(s) or feature may or may not
be elevated as well, see also suffix h
h     uh    
xh    uxh   
eh    ueh   
exh     uexh    
Icon for legends or overlaying l     ul    
Overlay icon for disused object exl     uexl    
Parallel lines[edit]

All icons with a symmetrical subject such as bridges (either highway, normal or waterway), borders and tunnels but excluding icons for crossings with other railway lines and stations use the following naming convention:

  • v prefix, both lines in use:  ,  ,  
  • ev prefix, left line disused, right line in use:  ,  ,  
  • xv prefix, left line in use, right line disused:  ,  ,  
  • exv prefix, both lines disused:  ,  ,  

For crossings the prefix applies to the crossing line:

  • v:  
  • ev:  
  • xv:  
  • exv:  

For symmetrical stations the pattern is the same as for crossings, where the prefix is placed before the v and denotes the entire station:

  • v:  
  • ev:  
  • exv:  

For asymmetrical stations, prefixes which only apply to one half are placed after the v:

  •   (vSTR-BHF)
  •   (vexSTR-BHF)
  •   (vSTR-eBHF)
  •   (vSTR-exBHF)
Transverse parallel lines[edit]

This subgroup covers icons where the parallel lines run across. If the icon name does not need a separating dash, then the name is the same as the regular icon, with the addition of the suffix q (for quarter turn):

  (vSTR)   (vSTRq)
  (evCONTf)   (evCONTfq)
  (uvBHF)   (uvBHFq)

All other icons are named as if they were two regular icons, one above the other. Note that there is no v prefix for these icons:

  (mKRZ-KRZo)   (mKRZo)
  (uSTRq-uSTR+r)   (uSTRq)
Mixed lines[edit]

For icons with both more than one colour, the m prefix indicates that the primary line is the default colour and the secondary (u, f or g) is different. A um, fm or gm prefix denotes the opposite.

  • If q (quarter turn) is part of the title suffix, the primary line line runs across the page, from left to right.
  • Some suffix title codes, for instance u, o, imply grade separation, also t, h if used once. This determines which line is drawn over (z-layer above) the other.
  • If both lines are on same level, then the secondary track is usually layered below the primary (z-layer under), unless the primary is out of use and the secondary is in use.
m um
  (mKRZ)   (umKRZ)
  (mABZgl)   (umABZgl)
  (mABZqr)   (umABZqr)

The f and g sets can also be mixed.

  (mfKRZ)   (fmKRZ)
  (mfKRZo)   (fmKRZo)
  (mgKRZo)   (gmKRZo)

If two of the u, f and g prefixes are used, m is omitted.

  (fuKRZo)   (ufKRZo)
  (guKRZo)   (ugKRZo)

other colour sets can also be mixed, but use a different naming scheme.

  •   (mABZgr +yellow)
  •   (umKRZo +saffron)
  •   (xmtKRZtu azure+)
  •   (mvSTR black+orange)

For more complex icons, possibly with a third line/track depicted, the prefix letters e and x are insufficient to address line status. Instead, title suffixes g, q, l, r, each representing a graphic element when given, are prepended with 'x' in case the line should use ex or out-of-use color. Similarly, prepending m determines whether such a graphic element should be drawn with the secondary line color and drawn below primary (if same-leveled). Primary and secondary line colors are determined by a reference version not using any m modifier(s) in suffix of the root element. They are possibly modified by an additional color specification, as shown in the examples above.


The core part of the icon ID:

Description Root e.g. Etymology
90° branching ABZ[f] DE: Abzweigstelle
Accessible station ACC EN: accessible
Station BHF DE: Bahnhof
Pedestrian walkway BL EN: black line
Platform (main series) BS DE: Bahnsteig
Bridge BRÜCKE[g] DE: Brücke
Small bridge BRÜCKE1[g] DE: Brücke
Culvert BRÜCKE2[g] DE: Brücke
1/2 column offset BS2[f] DE: Bahnstrecke
Non-passenger stop BST DE: Betriebsstelle
Level crossing BUE DE: Bahnübergang
Continuation CONT[f] EN: continuation
Non-passenger station DST DE: Dienststation
End of track ENDE[f] DE: Ende, EN: end
Track change FOW DE: Fahrordnungswechsel
Border GRENZE DE: Grenze
Minor station HST DE: Haltestelle
Interchange INT EN: interchange
Milepost KMW DE: Kilometrierungswechsel
Cross exchange KRW[h][f] NL: kruiswissel
Crossing KRZ DE: Kreuzung
Mask MASK[i]   DE: Maske/Maskieren, EN: Mask
Figure num[f] DE: Nummer, EN: Number
Platform (other) PLT EN: Platform
Loop/siding PSL EN: Passing loop
Column shift SHI[f] EN: shift
Single/parallel transition SPL[f] DE: Spalten, EN: split
Track STR DE: Strecke, EN: stretch / straight
T junction TEE[f] EN: tee
Tunnel TUNNEL[f] DE: Tunnel, EN: tunnel
Track change ÜST[g] DE: Überleitstelle
Flying junction ÜWB[g] DE: Überwerfungsbauwerk
River WASSER DE: Wasser
Type change WECHSEL DE: Wechsel
Turning loop WSL[f] DE: Wendeschleife
Root modifiers
Junction + feature AICON[f] DE: Abzweigstelle
Cutting CBHF EN: Cut
Embankment DSTR DE: Damm
Filled FABZl+l cerulean DE: gefüllt
Terminus[j] KBHF[f] DE: Kopfbahnhof
Interruption LSTR DE: Lücke
Interruption LLSTR[f][k] DE: Lücke
Mask MICON   DE: Maske/Maskieren, EN: Mask
Narrow nICON nSTR DE: eng, EN: narrow
Commuter station SBHF[l] DE: S-Bahnhof EN: Suburban
Road crossing SBRÜCKE DE: Straße
Mode change SWBHF[l] mSWBHF DE: Systemwechselbahnhof
Split-level station[m] TBHF DE: Turmbahnhof
Water + feature WTUNNEL WTUNNEL1 DE: Wasser + Tunnel, EN: Water + tunnel
Cross-platform interchange XBHF-L arbitrarily chosen / from "Cross"

There are a few "pseudo"-roots that do not follow the all-caps rule, such as num (e.g.   (num1r)) and Lock.


Suffixes in this category indicate the directionality, position or structural variation. Note that directions are based on as if travelling along within a standard, top-to-bottom route.

Four common suffixes are left, right, forward and backward:
  • l [links, German for "left"],
  • r [rechts, German for "right"],
  • f [Fahrtrichtung, German for "direction of travel"] (forward, basically) and
  • g [Gegenrichtung, German for "opposite direction" (of travel)].
The order of l, r, x and + suffix symbols should be:
  1. to   left / right (in use);
  2. to exleft / exright (out of use);[n]
  3. + if at least one of:
  4. from   left / right (in use);
  5. from exleft / exright (out of use).[n]

After the first BSicons were created in 2006, it was soon realized that the system with f and g was very limited, especially when dealing with icons facing across. Therefore, the + suffix—in the sense of "coming from"—was introduced.

l and r have been used mistakenly as left and right as the reader sees it; there is no "u" for "up [the page]" and "d" for "down [the page]", hence instead the icons are designed as if moving inside a classical 'down' track route that is being depicted instead.

Caveat: Depending on context g also pairs with q, them sharing letter positions wrt other suffix codes. In this respect g usually stands for [geradeaus, German for "straight" or "straight ahead"].[o][p] The letter tuple is then employed to bisect straight (top-bottom) from across track (left-right) attributed icon variants in applicable icon sets.

Suffix e.g. Etymology
Objective upper right 1[q]   
Objective lower right 2[q]   
Objective lower left 3[q]   
Objective upper left 4[q]   
Start a    DE: Anfang
End e    DE: Ende, EN: end
Forward f    DE: Fahrtrichtung, EN: forward
Backward g    DE: Gegenrichtung, EN: against (non-exclusive etymologies)
Elevated h    DE: Hochbahn, EN: high level. Concerns the additional track / element.
Halved (straight at corner) h    DE: halb, EN: half. Used after corner number only
To left l    DE: links, EN: left
From left +l   
Interruption L    DE: Lücken
Left part -L    DE: Linke, EN: left
Middle m    DE: mittlere, EN: middle
Middle part -M    DE: Mitte, EN: middle
Narrow line n    DE: eng, EN: narrow
Over o    DE: oben, EN: over
Across q   
DE: quer, EN: quarter turn.[r]
To right r    DE: rechts, EN: right
From right +r   
Right part -R    DE: Rechte, EN: right
Tunnel t    DE: Tunnel, EN: tunnel. Concerns the additional track / element.
Under u    DE: unter, EN: under
Parallel lines v    Similar to "v" prefix.
Out of use x   
EN: expired. Usually indicates that one element is out of use.[s]

Other codes are made from joining these together. Additional icons can be created by overlaying existing ones.

Suffix modifiers[edit]

  • A primary object, as used here, is usually the line.
  • A secondary object is usually an object on the line, or one which would be on a line, like a station. The crossing line of   (KRZo) is also defined as the secondary object.
  • An auxiliary object is an object which is not a line (or roadway) and which does not change colour with the ex prefixes, such as a formation:  .

for root modifiers (L, F, M)

. transforms icon 1/4 shift in direction
  •   (uSTR+r)  (uSTR+r.G)
  •   (uSTRr)   (uSTRr.G)
+ transforms icon in direction
so that the auxiliary object
is at the icon edge
  •   (CSTR)  (lcCSTR+R)
  •   (hSTR)  (lhSTR+R)
~ transform objects from centre
to boundary
  (lBHF)  (lBHF~F)
@ transforms secondary in direction
with respect to line or primary
  •   (CONTf)  (CONTf@F)
  •   (lvINT-)  (lvINT@F-)
- secondary connects in direction   (BHF)  (BHF-L)
( ) only part of secondary shown
  •   (HST)  (HST(L))
  •   (KRZo)  (KRZo(Ll))
l r f g m
  (none) l/r: to direction   (STR)  (STRl)
f/g: directionals   (STR)  (STRf)
+ from direction   (STR)  (STR+l)
~ half of primary object
  •   (vSTR2)  (vSTR2~l)
  •   (utvSTRa@g)  (utvSTRa@g~g)
@ transforms auxiliary in direction
with respect to line or primary
  •   (tSTR2a)  (tSTR2a@f)
  •   (tBHFa)  (tBHFa@f)
- auxiliary connects in direction   (tSTRa)  (tSTRa-l)
( ) only part of auxiliary shown
  •   (lhSTR)  (lhSTR(l))
  •   (lhKRZWa)  (lhKRZWa(Ll))


  • dark colour means a currently open line / facility
  • light colour means either a closed line / route / facility or one under construction / planned
  • red indicates heavy rail or freight line
  • blue indicates light rail, metro or tram line.
Existing lines
in current use
Lines not in use
(planned or closed)
heavy rail
  #be2d2c BSicon BHF.svg
  #d77f7e BSicon exBHF.svg
metro/light rail & canals
  #003399 BSicon uBHF.svg
  #6281c0 BSicon uexBHF.svg
Berlin S-Bahn
  #006e34 BSicon lSBHF.svg
  #5abf89 BSicon exlSBHF.svg
  #034ea2 BSicon lACC.svg
  #6592c5 BSicon exlACC.svg
other features
  #000000 BSicon BAHN.svg
  #aaaaaa BSicon exBAHN.svg
  #888888 BSicon BS.svg
  #cccccc BSicon exBS.svg
other routes & special circumstances
(e.g. fare-free zones on a light-rail line)
(set f)
unwatered canals
(set g)
  #008000 BSicon fBHF.svg
  #2ca05a BSicon gBHF.svg
formations and structures
  #80a080 BSicon lDSTR.svg BSicon lMKRZu.svg BSicon PORTALg.svg BSicon lhSTRa.svg
interchanges and depôts (BSicon DST.svg) border fill
  #000000 BSicon lINT.svg
  #ffffff BSicon lDST.svg
cross-platform interchanges border fill
  #000000 BSicon XPLTq.svg
other colours background watercourses
  #007cc3 BSicon WASSER.svg


There are 30[t] BSicon sets in addition to the four standard sets:

  •   (eHST maroon)
  •   (eHST red)
  •   (eHST orange)
  •   (eHST carrot)
  •   (eHST saffron)
  •   (eHST yellow)
  •   (eHST golden)
  •   (eHST olive)
  •   (eHST lime)
  •   (eHST green)
  •   (eHST jade)
  •   (eHST teal)
  •   (eHST cyan)
  •   (eHST deepsky)
  •   (eHST azure)
  •   (eHST sky)
  •   (eHST cerulean)
  •   (eHST blue)
  •   (eHST denim)
  •   (eHST lavender)
  •   (eHST purple)
  •   (eHST violet)
  •   (eHST fuchsia)
  •   (eHST ruby)
  •   (eHST pink)
  •   (eHST ochre)
  •   (eHST brown)
  •   (eHST steel)
  •   (eHST grey)
  •   (eHST black)

Many standard icons, including some of those needed for drawing more complex track geometries, are available in all 34 sets. The smallest set, carrot, contains 1,662 icons.[u] However, most tables in this catalogue only show the heavy rail and metro sets. For an overview of the icons in other sets, see the catalogue by YLSS.

New colours can be proposed at Talk:BSicon/Colors.


Standard icons are drawn in a 500 pixel × 500 pixel square. Lines are 100 pixels wide, centred at 250 pixels. Parallel lines are centred on the quarter points, i.e. 125 and 375 pixels, as are formation elements. Thin lines (sidings, feeders, formation elements, linkways, borders, etc.) are 50 pixels wide, and also aligned to the ¼–½–¾ grid.


These templates are used for constructing the catalog pages (in increasing order of complexity):

Template Sample output
lHUB Interchange hub single cell
Single icon with no variations.
BAHN ex Icon generic train
Regular and ex variations only.
STR+4 ex u uex Curve from corner 4
The four basic variations: regular, ex, u and uex.
BUE e ex u ue uex Level crossing unspecified road
As BS-anleitung4, but also includes the e variants.
ENDEa x ex u ux uex Line end start
As BS-anleitung4, but also includes the x variants.
ABZgr ABZgr xABZgr eABZgr exABZgr uABZgr uxABZgr ueABZgr uexABZgr Junction forward & to right
Adds e and x variations to BS-anleitung4.
f…ABZgr f fe fx fex Junction forward & to right
ABZgl orange e x ex Junction forward & to left
As BS-anleitung6, but for a single color.
STRq ex t ext u uex ut uext Straight across
As BS-anleitung4, but also includes tunnel variations (t, ext, ut, uext).
vSHI2l- / v-SHI2+r ex t ext u uex ut uext Single line shift right to left
As BS-anleitung5, but also includes a second icon name.
STRl ex t ext h exh u uex ut uext uh uexh Turn to left
As BS-anleitung5, but adds elevated variations (h, exh, uh, uexh).
KRZ e x ex t et xt ext u ue ux uex ut uet uxt uext Crossing two lines
Adds the last two tunnel variants ((U)et and (U)xt), resulting in all four basic variations, in a slightly different order: regular, e, x and ex, for heavy and light rail, on surface and in tunnel.
KRZ e x ex t et xt ext h eh xh exh u ue ux uex ut uet uxt uext uh ueh uxh uexh Crossing two lines
As BS-anleitungV, with the addition of the elevated variants ((U)h, exh, uh, uexh).

Special purpose[edit]

vSTR-uKDSTa Line through Light rail terminal depôt start
Single complex icon with two features.
DST-STR                 Depôt + Line through
Eight variations of complex icon with two features (regular and ex for each part, then regular and u for the whole).
STR-STRl                                 Track through + Track to left
Sixteen variations of complex icon with two features (regular and ex for each part, then t, u and ut for the whole).
DST-BHF                                         Depôt + Station
Twenty variations of complex icon with two features (regular, x, e, and ex for each part, then regular and u for the whole).
ABZ23                                                 Junction to 2nd & 3rd corners
Twenty-four variations (regular, t, h, u, ut, uh) of complex icon with two branches (with x added before the branch suffix).
ABZ23                 Junction to 2nd & 3rd corners
Eight variations (regular, u) of complex icon with two branches (with x added before the branch suffix).
INT-R   INT   INT-L   Interchange
Used for displaying an icon and its -Left and -Right variants.
tKICONa ex ex ex ex Terminus start, in tunnel
Used for displaying regular and ex variants of INT, ACC and INTACC icons.
BSicon KRX.svg KRX
Displays a single icon and its name in a pair of cells in a catalogue table row.
KRX BSicon KRX.svg
Similar to BS-anleitungq, but with the icon to the right of the label.
ROOTq Template:BS-border Template:BS-border Template:BS-border Template:BS-border Template:BS-border Basic road icon across
Used solely for generic roads.
SKRZ-GROOTo Template:BS-border Template:BS-border Template:BS-border Template:BS-border Overpass rail over
As above, but for road-rail crossings.
mKRZo                         Railway bridge over waterway
Used solely for canal pages.
ABZgl                                   Branching to left
As BS-anleitungP, but with u prefix.

The documentation for each template explains its usage and syntax.

There are also matching templates that insert the header row for each of the icon row templates. For example, the template {{Template:WP:RDT/BSa8/h}} creates the first row of this table (which uses {{Template:WP:RDT/BSa8}}):

ex t ext h exh u uex ut uext uh uexh
BHFq ex t ext h exh u uex ut uext uh uexh Station across


  1. Except the blank icons used as spacers.
  2. a b In mixed icons using two of "u", "f" and "g", the secondary colour prefix is placed where "m" would be; e.g.   (uxgKRZo).
  3. "k" icons are used to draw circular 90° turns over two rows; see BSicon/Catalogue/compound junctions#k icons. Two curve icons and a connecting corner icon are used to form a curve, with an additional interior corner icon used for parallel and elevated curves. A double "kk" prefix indicates that the curve changes the turning direction and forms an S-shaped curve with two regular "k" icons; e.g.   (kkSTR2).
  4. A double "LL" prefix is used to indicate special corner connections.
  5. a b These prefixes can also be used as suffixes to modify secondary objects.
  6. a b c d e f g h i j k l m n In most cases these icons are accompanied by a suffix. A number indicating a variation is also considered a suffix.
  7. a b c d e The letter Ü can be input on Windows as Ctrl+'+U with the UK keyboard layout (or by typing Alt+0220 into the numeric keypad) and on macOS as  Opt+u then U (or by holding  Shift+U and then pressing 2). Or just copy and paste it, if you can't be bothered or your computer doesn't let you. Some redirects replacing the 'Ü' with 'UE' have been created (e.g. BRUECKE → BRÜCKE).
  8. KRW (from the Dutch kruiswissel; literally cross exchange) to adjacent column. Identical to a 4-quarter shift, and should not be confused with ABZ icons used for branching off from a line, because the geometry used differs.
  9. Special-purpose icon.
  10. Can also be applied to other stations and non-stations.
  11. Special case for icons connecting at corners.
  12. a b Can also be applied to HST. S+ (S+BHF, S+HST) indicates that both S-Bahn and non-S-Bahn trains call at a station.
  13. Can also be applied to ACC, HST, HSTACC, INT, INTACC, SBHF, SHST, S+BHF, S+HST, DST, BST and ZOLL.
  14. a b unused if e/x/ex prefixes suffice to title set variants
  15. introduced in 2013, possibly before: Talk:BSicon/Renaming/ABZ#Former_ABZ3
  16. Symbol g polymorphism in BSicon titles can be confusing, esp. because the letter in root's prefix has yet another meaning. Comparing titles of a set can aid in getting an interpretation that fits, but this is unstable at times when title mapping is disputed, discussed and/or adjusted to accomodate for new/ambiguously named icons.
  17. a b c d Additional modifiers:
    +n   – from the corner
    cn   (EN: corner) – supplementary for 45° branchings and special situations
    tn   (EN: tunnel) – tunnel portal; supplementary for 45° branchings
  18. Rotated 90° anticlockwise.
  19. Aside from termini, this is used in front of other suffixes   (ABZgl+xl) or without an additional suffix   (THSTx) to indicate that an element is out of use.
  20. As of January 2019. The ruby and teal sets have also been extended into exruby and exteal respectively.
  21. As of January 2019 (PetScan: HTML, CSV).

Requests for new icons[edit]

Requests for new icons should be made at Talk:BSicon/New icons and icon requests