diff --git a/docs/Project.toml b/docs/Project.toml
index 418f2c7b..fa0f1fc5 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -4,7 +4,9 @@ Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
 InverseFunctions = "3587e190-3f89-42d0-90ee-14403ec27112"
 Latexify = "23fbe1c1-3f47-55db-b15f-69d7ec21a316"
 Markdown = "d6f4376e-aef5-505a-96c1-9c027394607a"
+OrderedCollections = "bac558e1-5e72-5ebc-8fee-abe8a469f55d"
 
 [compat]
 Documenter = "1"
 Latexify = "0.16"
+OrderedCollections = "1.6"
diff --git a/docs/make.jl b/docs/make.jl
index f9695384..e2877ec2 100644
--- a/docs/make.jl
+++ b/docs/make.jl
@@ -1,11 +1,31 @@
 using Documenter, Unitful, Dates
 
+const ci = get(ENV, "CI", nothing) == "true"
+
+function check_defaultunits_version()
+    vfile = "docs/src/assets/vfile.txt"
+    r = readline(vfile)
+    docs_v = VersionNumber(r)
+    pkg_v = pkgversion(Unitful)
+    docs_v == pkg_v || error("Docs chapter on default units built with the wrong version of Unitful \
+        (docs built for $docs_v vs current Unitful version $pkg_v). \
+        Please run the script on the local computer with the proper Unitful version")
+    return nothing
+end
+
+# on local computer, (re-)create the documentation file defaultunits.md
+if !ci
+    ENV["UNITFUL_FANCY_EXPONENTS"] = false
+    include("make_def-units_docs.jl")
+    MakeDefUnitsDocs.make_chapter()
+end
+
 DocMeta.setdocmeta!(Unitful, :DocTestSetup, :(using Unitful))
 
 makedocs(
     sitename = "Unitful.jl",
-    format = Documenter.HTML(prettyurls = get(ENV, "CI", nothing) == "true"),
-    warnonly = [:missing_docs],
+    format = Documenter.HTML(prettyurls = ci),
+    warnonly = [:missing_docs, :doctest],
     modules = [Unitful],
     workdir = joinpath(@__DIR__, ".."),
     pages = [
@@ -21,9 +41,12 @@ makedocs(
         "Interoperability with `Dates`" => "dates.md"
         "Extending Unitful" => "extending.md"
         "Troubleshooting" => "trouble.md"
-        "Pre-defined units and constants" => "defaultunits.md"
+        "Pre-defined dimensions, units, and constants" => "defaultunits.md"
         "License" => "LICENSE.md"
     ]
 )
 
-deploydocs(repo = "github.com/PainterQubits/Unitful.jl.git")
+if ci
+    check_defaultunits_version()
+    deploydocs(repo = "github.com/PainterQubits/Unitful.jl.git")
+end
diff --git a/docs/make_def-units_docs.jl b/docs/make_def-units_docs.jl
new file mode 100644
index 00000000..eae2c216
--- /dev/null
+++ b/docs/make_def-units_docs.jl
@@ -0,0 +1,336 @@
+module MakeDefUnitsDocs
+
+using Unitful, OrderedCollections
+
+mdfile = "docs/src/defaultunits.md"
+mdheader = "docs/src/assets/defaultunits-header.md"
+mdfooter = "docs/src/assets/defaultunits-footer.md"
+mdlogunits = "docs/src/assets/defaultunits-logunits.md"
+vfile = "docs/src/assets/vfile.txt"
+
+"""
+# Examples
+```julia-repl
+julia> prefnamesvals()
+OrderedCollections.OrderedDict{String, Tuple{String, Int64}} with 20 entries:
+  "y"  => ("yocto", -24)
+  "z"  => ("zepto", -21)
+  ⋮    => ⋮
+"""
+function prefnamesvals()
+    prefixnames = Dict(
+        "Q"  => "quetta",
+        "R"  => "ronna",
+        "Y"  => "yotta",
+        "Z"  => "zetta",
+        "E"  => "exa",
+        "P"  => "peta",
+        "T"  => "tera",
+        "G"  => "giga",
+        "M"  => "mega",
+        "k"  => "kilo",
+        "h"  => "hecto",
+        "da" => "deca",
+        "d"  => "deci",
+        "c"  => "centi",
+        "m"  => "milli",
+        "μ"  => "micro",
+        "n"  => "nano",
+        "p"  => "pico",
+        "f"  => "femto",
+        "a"  => "atto",
+        "z"  => "zepto",
+        "y"  => "yocto",
+        "r"  => "ronto",
+        "q"  => "quecto")
+    pd = Unitful.prefixdict
+    sxp = sort(collect(keys(pd)))
+
+    return OrderedDict(pd[k] => (prefixnames[pd[k]], k) for k in sxp if pd[k] != "")
+end
+
+regularid(n) = !startswith(string(n), r"#|@")
+
+uful_ids() = filter(regularid, names(Unitful; all=true))
+
+docstr(n::Symbol) = Base.Docs.doc(Base.Docs.Binding(Unitful, n)) |> string
+
+isprefixed(u::Symbol) = occursin("A prefixed unit, equal", docstr(u))
+
+isdocumented(n::Symbol) = !startswith(docstr(n), "No documentation found")
+
+"""
+    getphysdims(uids::Vector{Symbol})
+Filters the list of `Unitful` identifiers to return those which denote physical dimensions (e.g. `Area`, `Power`)
+"""
+getphysdims(uids) = filter(isphysdim, uids)
+
+isphysdim(n::Symbol) = _isphysdim(getproperty(Unitful, n))
+_isphysdim(_) = false
+_isphysdim(::Type{Union{Quantity{T,D,U}, Level{L,S,Quantity{T,D,U}} where {L,S}} where {T,U}}) where D = true
+
+"""
+# Examples
+```julia-repl
+julia> getdim(Unitful.Area)
+𝐋^2
+```
+"""
+getdim(::Type{Union{Quantity{T,D,U}, Level{L,S,Quantity{T,D,U}} where {L,S}} where {T,U}}) where D = D
+getdim(x::Symbol) = getdim(getproperty(Unitful, x))
+
+"""
+# Examples
+```julia-repl
+julia> getdimpars(Unitful.Power)
+svec((Unitful.Dimension{:Length}(2//1), Unitful.Dimension{:Mass}(1//1), Unitful.Dimension{:Time}(-3//1)))
+```
+"""
+getdimpars(x) = getdimpars(getdim(x))
+getdimpars(::Unitful.Dimensions{N}) where N = N
+
+getdimpow(x) = only(getdimpars(x)).power
+
+isbasicdim(x) = length(getdimpars(x)) == 1 && getdimpow(x) == 1
+
+function physdims_categories(physdims)
+    basicdims = Symbol[]
+    compounddims = Symbol[]
+    otherdims =  Symbol[]
+    for d in physdims
+        try
+            if isbasicdim(d)
+                push!(basicdims, d)
+            else
+                push!(compounddims, d)
+            end
+        catch
+            push!(otherdims, d)
+        end
+    end
+    return (;basicdims, compounddims, otherdims, )
+end
+
+"""
+# Examples
+```julia-repl
+julia> unitsdict(basicdims, uids)
+OrderedCollections.OrderedDict{Symbol, Vector{Symbol}} with 7 entries:
+  :Amount      => [:mol]
+  :Current     => [:A]
+  :Length      => [:angstrom, :ft, :inch, :m, :mi, :mil, :yd]
+  :Luminosity  => [:cd, :lm]
+  :Mass        => [:dr, :g, :gr, :kg, :lb, :oz, :slug, :u]
+  :Temperature => [:K, :Ra, :°C, :°F]
+  :Time        => [:d, :hr, :minute, :s, :wk, :yr]
+```
+"""
+function unitsdict(physdims, uids)
+    ups = []
+    for d in physdims
+        dm = getproperty(Unitful, d)
+        units = Symbol[]
+        for uname in uids
+            u = getproperty(Unitful, uname)
+            if (u isa Unitful.Units) 
+                if (1*u isa dm) && (!isprefixed(uname) || uname == :g) && isdocumented(uname) # gram considered prefixed unit
+                    push!(units, uname)
+                end
+            end
+        end
+        if !isempty(units) 
+            sort!(units; by = x -> lowercase(string(x)))
+            unique!(nameofunit, units) # special cases: Liter, Angstrom
+            push!(ups, d => units)
+        end
+    end
+    return OrderedDict(sort!(ups))
+end
+
+function physconstants(uids) 
+    ph_consts = [n for n in uids if 
+        isconst(Unitful, n) && 
+        (getproperty(Unitful, n) isa Quantity) &&
+        isdocumented(n) ]
+    sort!(ph_consts, by = x -> lowercase(string(x)))
+    return ph_consts
+end
+
+mutable struct PhysConst
+    symbol::Symbol
+    allsymbols::Set{Symbol}
+    mark4del::Bool
+end
+
+equiv(pc1::PhysConst, pc2::PhysConst) = getproperty(Unitful, pc1.symbol) === getproperty(Unitful, pc2.symbol)
+
+Base.string(pc::PhysConst) = join((pc.allsymbols |> collect .|> string |> sort), ", ")
+
+function merge_duplicate_constants(ph_consts)
+    pcarr = [PhysConst(s, Set([s]), false) for s in ph_consts]
+    for i in 1:lastindex(pcarr)-1
+        pcarr[i].mark4del && continue
+        for j in i+1:lastindex(pcarr)
+            pcarr[j].mark4del && continue
+            if equiv(pcarr[i], pcarr[j])
+                push!(pcarr[i].allsymbols, pcarr[j].symbol)
+                pcarr[j].mark4del=true
+            end
+        end
+    end
+    filter!(pc -> !pc.mark4del, pcarr)
+end
+
+function isnodims(u) 
+    u isa Unitful.FreeUnits || return false
+    return dimension(u) == NoDims
+end
+isnodims(u::Symbol) = isnodims(getproperty(Unitful, u))
+
+nodimsunits(uids) = [n for n in uids if isnodims(n) && isdocumented(n) && !isprefixed(n) && n != :NoUnits]
+
+removerefs(d) = replace(d, r"\[(`[\w\.]+\`)]\(@ref\)" => s"\1")
+
+"""
+    udoc(s::Symbol)
+Truncates documentation of a unit and removes references
+"""
+function udoc(s)
+    m = match(r"(?ms)(.+)\n\nDimension: ", docstr(s))
+    isnothing(m) && return nothing
+    return m.captures[1] |> removerefs
+end
+
+udoc(pc::PhysConst) = udoc(pc.symbol)
+
+"""
+    dimdoc(s::Symbol)
+    dimdoc(s::AbstractString)
+Truncates documentation of a dimension and removes references
+"""
+function dimdoc(s::Symbol) 
+    doctxt = match(r"(supertype for .+)with a value", docstr(s)).captures[1] |> removerefs |> strip |> uppercasefirst
+    return "```\nUnitful.$s\n```\n\n$(doctxt)\n\n"
+end
+
+dimdoc(s::AbstractString) = dimdoc(s |> Symbol)
+
+function nameofunit(u)
+    special = Dict(u"ha" => "Hectare", u"kg" => "Kilogram", u"°F" => "Degree Fahrenheit", u"°C" => "Degree Celcius")
+    u in keys(special) && return special[u]
+    return string(_nameofunit(u))
+end
+
+nameofunit(s::Symbol) = nameofunit(getproperty(Unitful, s))
+
+_nameofunit(::Unitful.Units{N}) where N = _nameofunit(only(N))
+_nameofunit(::Unitful.Unit{U}) where U = U
+
+function make_subsection_text(uvec; isunit=true)
+    s = ""
+    for u in uvec 
+        if isunit
+            n = nameofunit(u)
+        else
+            n = string(u)
+        end
+        d = udoc(u) 
+        s *= "#### $n\n\n$d\n\n"
+    end
+    return s
+end
+
+function make_simple_section_text(sectiontitle, uvec; isunit=true)
+    s = "## $sectiontitle\n\n"
+    s *= make_subsection_text(uvec; isunit)
+    return s
+end
+
+function make_structured_section_text(sectiontitle, sectiondict)
+    s = "## $sectiontitle\n\n" 
+    for (dim, uvec) in sectiondict 
+        s *= "### $dim\n\n"
+        s *= dimdoc(dim)
+        s *= make_subsection_text(uvec)
+    end
+    return s
+end
+
+function makeprefixsection(pnv)
+    s = """
+## Metric (SI) Prefixes
+
+| Prefix | Name | Power of Ten |
+|--------|--------|--------|
+"""
+    for (k,v) in pnv
+        s *= "| $k | $(v[1]) | $(v[2]) |\n"
+    end
+
+    return s
+end
+
+
+header() = read(mdheader, String) 
+footer() = read(mdfooter, String)
+logunits() = read(mdlogunits, String)
+
+function makefulltext(sections, nodims_units, phys_consts)
+    s = header() * "\n\n"
+    for (sectiontitle, sectiondict) in sections
+        s *= make_structured_section_text(sectiontitle, sectiondict)
+    end
+    s *= make_simple_section_text("Dimensionless units", nodims_units)
+    s *= logunits()
+    s *= make_simple_section_text("Physical constants", phys_consts |> merge_duplicate_constants; isunit=false)
+    s *= makeprefixsection(prefnamesvals())
+    s *= footer()
+    return s
+end
+
+function write_unitful_v(vfile)
+    open(vfile, "w") do io
+        println(io, pkgversion(Unitful))
+    end
+    return nothing
+end
+
+function savetext(fulltext, mdfile)
+    open(mdfile,"w") do io
+       write(io, fulltext)
+    end
+    write_unitful_v(vfile)
+    return nothing
+end
+
+"""
+    make_chapter(wr = true; verbose = false)
+Generates the text of the `Pre-defined units and constants` documentation section 
+and writes it into the file if `wr==true`
+"""
+function make_chapter(wr = true; verbose = false)
+    uids = uful_ids()
+
+    (;basicdims, compounddims) = uids |> getphysdims |> physdims_categories
+
+    basic_units =  unitsdict(basicdims, uids)
+    compound_units = unitsdict(compounddims, uids)
+    nodims_units = nodimsunits(uids) 
+    sections = OrderedDict(["Base dimensions" => basic_units,
+        "Derived dimensions" => compound_units])
+    phys_consts = physconstants(uids)
+
+    fulltext = makefulltext(sections, nodims_units, phys_consts)
+
+    wr && savetext(fulltext, mdfile)
+
+    if verbose
+        return (;fulltext, sections, nodims_units, phys_consts)
+    else
+        return nothing
+    end
+end
+
+export make_chapter
+
+end # module
diff --git a/docs/src/assets/defaultunits-footer.md b/docs/src/assets/defaultunits-footer.md
new file mode 100644
index 00000000..e69de29b
diff --git a/docs/src/assets/defaultunits-header.md b/docs/src/assets/defaultunits-header.md
new file mode 100644
index 00000000..e2ac90ce
--- /dev/null
+++ b/docs/src/assets/defaultunits-header.md
@@ -0,0 +1,16 @@
+# Pre-defined units and сonstants
+
+In the following, only non-prefixed units are listed. To get a more detailed information about a unit, and to get information about prefixed units, use `Julia` help, e.g.
+
+```
+help?> Unitful.kW
+  Unitful.kW
+
+  A prefixed unit, equal to 10^3 W.
+
+  Dimension: 𝐋² 𝐌 𝐓⁻³
+
+  See also: Unitful.W.
+```
+
+For prefixes, see [below](#Metric-(SI)-Prefixes).
diff --git a/docs/src/assets/defaultunits-logunits.md b/docs/src/assets/defaultunits-logunits.md
new file mode 100644
index 00000000..5d5317ed
--- /dev/null
+++ b/docs/src/assets/defaultunits-logunits.md
@@ -0,0 +1,22 @@
+## Logarithmic units 
+
+| Unit           | Name                            |
+|----------------|---------------------------------|
+| `dB`       |        Decibel |
+| `B`        |         Bel |
+| `Np`       |        Neper |
+| `cNp`      |       Centineper |
+
+### Log units related to reference levels
+| Unit           | Reference level                            |
+|----------------|---------------------------------|
+| `dBHz`       |         1Hz |
+| `dBm`          |         1mW |
+| `dBV`          |         1V |
+| `dBu`          |         sqrt(0.6)V |
+| `dBμV`        |         1μV |
+| `dBSPL`      |         20μPa |
+| `dBFS`        |         RootPowerRatio(1) |
+| `dBΩ`          |         1Ω |
+| `dBS`          |         1S |
+
diff --git a/docs/src/assets/vfile.txt b/docs/src/assets/vfile.txt
new file mode 100644
index 00000000..49e0a31d
--- /dev/null
+++ b/docs/src/assets/vfile.txt
@@ -0,0 +1 @@
+1.23.1
diff --git a/docs/src/defaultunits.md b/docs/src/defaultunits.md
index 6ce91e3f..69a6575c 100644
--- a/docs/src/defaultunits.md
+++ b/docs/src/defaultunits.md
@@ -20,6 +20,12 @@ For prefixes, see [below](#Metric-(SI)-Prefixes).
 
 ### Amount
 
+```
+Unitful.Amount
+```
+
+Supertype for quantities and levels of dimension `Unitful.𝐍`
+
 #### Mole
 
 ```
@@ -30,6 +36,12 @@ The mole, the SI base unit for amount of substance.
 
 ### Current
 
+```
+Unitful.Current
+```
+
+Supertype for quantities and levels of dimension `Unitful.𝐈`
+
 #### Ampere
 
 ```
@@ -40,6 +52,12 @@ The ampere, the SI base unit of electric current.
 
 ### Length
 
+```
+Unitful.Length
+```
+
+Supertype for quantities and levels of dimension `Unitful.𝐋`
+
 #### Angstrom
 
 ```
@@ -99,6 +117,12 @@ The yard, a US customary unit of length defined as 3 ft.
 
 ### Luminosity
 
+```
+Unitful.Luminosity
+```
+
+Supertype for quantities and levels of dimension `Unitful.𝐉`
+
 #### Candela
 
 ```
@@ -107,8 +131,22 @@ Unitful.cd
 
 The candela, the SI base unit of luminous intensity.
 
+#### Lumen
+
+```
+Unitful.lm
+```
+
+The lumen, an SI unit of luminous flux, defined as 1 cd × sr.
+
 ### Mass
 
+```
+Unitful.Mass
+```
+
+Supertype for quantities and levels of dimension `Unitful.𝐌`
+
 #### Dram
 
 ```
@@ -175,6 +213,12 @@ The unified atomic mass unit, or dalton, a unit of mass defined as 1/12 the mass
 
 ### Temperature
 
+```
+Unitful.Temperature
+```
+
+Supertype for quantities and levels of dimension `Unitful.𝚯`
+
 #### Kelvin
 
 ```
@@ -209,6 +253,12 @@ The degree Fahrenheit, a US customary unit of temperature, defined such that 0 
 
 ### Time
 
+```
+Unitful.Time
+```
+
+Supertype for quantities and levels of dimension `Unitful.𝐓`
+
 #### Day
 
 ```
@@ -261,6 +311,12 @@ The year, a unit of time, defined as 365.25 d.
 
 ### Acceleration
 
+```
+Unitful.Acceleration
+```
+
+Supertype for quantities and levels of dimension `𝐋 / 𝐓 ^ 2`
+
 #### Gal
 
 ```
@@ -281,6 +337,12 @@ The nominal acceleration due to gravity in a vacuum near the surface of the eart
 
 ### Area
 
+```
+Unitful.Area
+```
+
+Supertype for quantities and levels of dimension `𝐋 ^ 2`
+
 #### Are
 
 ```
@@ -315,6 +377,12 @@ The hectare, a metric unit of area, defined as 100 a.
 
 ### BField
 
+```
+Unitful.BField
+```
+
+Supertype for quantities and levels of dimension `𝐈 ^ -1 * 𝐌 * 𝐓 ^ -2`
+
 #### Gauss
 
 ```
@@ -333,6 +401,12 @@ The tesla, an SI unit of magnetic B-field strength, defined as 1 kg / (A × s^2)
 
 ### Capacitance
 
+```
+Unitful.Capacitance
+```
+
+Supertype for quantities and levels of dimension `𝐈 ^ 2 * 𝐋 ^ -2 * 𝐌 ^ -1 * 𝐓 ^ 4`
+
 #### Farad
 
 ```
@@ -343,6 +417,12 @@ The farad, an SI unit of electrical capacitance, defined as 1 s^4 × A^2 / (kg 
 
 ### Charge
 
+```
+Unitful.Charge
+```
+
+Supertype for quantities and levels of dimension `𝐈 * 𝐓`
+
 #### Coulomb
 
 ```
@@ -353,6 +433,12 @@ The coulomb, an SI unit of electric charge, defined as 1 A × s.
 
 ### DynamicViscosity
 
+```
+Unitful.DynamicViscosity
+```
+
+Supertype for quantities and levels of dimension `𝐌 * 𝐋 ^ -1 * 𝐓 ^ -1`
+
 #### Poise
 
 ```
@@ -363,6 +449,12 @@ The poise, a CGS unit of dynamic viscosity, defined as 1 dyn × s / cm^2.
 
 ### ElectricalConductance
 
+```
+Unitful.ElectricalConductance
+```
+
+Supertype for quantities and levels of dimension `𝐈 ^ 2 * 𝐋 ^ -2 * 𝐌 ^ -1 * 𝐓 ^ 3`
+
 #### Siemens
 
 ```
@@ -373,6 +465,12 @@ The siemens, an SI unit of electrical conductance, defined as 1 Ω^-1.
 
 ### ElectricalResistance
 
+```
+Unitful.ElectricalResistance
+```
+
+Supertype for quantities and levels of dimension `𝐈 ^ -2 * 𝐋 ^ 2 * 𝐌 * 𝐓 ^ -3`
+
 #### Ohm
 
 ```
@@ -383,6 +481,12 @@ The ohm, an SI unit of electrical resistance, defined as 1 V / A.
 
 ### Energy
 
+```
+Unitful.Energy
+```
+
+Supertype for quantities and levels of dimension `(𝐌 * 𝐋 ^ 2) / 𝐓 ^ 2`
+
 #### BritishThermalUnit
 
 ```
@@ -425,6 +529,12 @@ The joule, an SI unit of energy, defined as 1 N × m.
 
 ### Force
 
+```
+Unitful.Force
+```
+
+Supertype for quantities and levels of dimension `(𝐌 * 𝐋) / 𝐓 ^ 2`
+
 #### Dyne
 
 ```
@@ -451,6 +561,12 @@ The newton, an SI unit of force, defined as 1 kg × m / s^2.
 
 ### Frequency
 
+```
+Unitful.Frequency
+```
+
+Supertype for quantities and levels of dimension `inv(𝐓)`
+
 #### Becquerel
 
 ```
@@ -493,6 +609,12 @@ Revolutions per second, a unit of rotational speed, defined as 2π rad / s.
 
 ### HField
 
+```
+Unitful.HField
+```
+
+Supertype for quantities and levels of dimension `𝐈 / 𝐋`
+
 #### Oersted
 
 ```
@@ -503,6 +625,12 @@ The oersted, a CGS unit of magnetic H-field strength, defined as 1000 A / (4π 
 
 ### Inductance
 
+```
+Unitful.Inductance
+```
+
+Supertype for quantities and levels of dimension `𝐈 ^ -2 * 𝐋 ^ 2 * 𝐌 * 𝐓 ^ -2`
+
 #### Henry
 
 ```
@@ -513,6 +641,12 @@ The henry, an SI unit of electrical inductance, defined as 1 J / A^2.
 
 ### KinematicViscosity
 
+```
+Unitful.KinematicViscosity
+```
+
+Supertype for quantities and levels of dimension `𝐋 ^ 2 * 𝐓 ^ -1`
+
 #### Stokes
 
 ```
@@ -521,17 +655,13 @@ Unitful.St
 
 The stokes, a CGS unit of kinematic viscosity, defined as 1 cm^2 / s.
 
-### Luminous flux
-
-#### Lumen
+### MagneticFlux
 
 ```
-Unitful.lm
+Unitful.MagneticFlux
 ```
 
-The lumen, an SI unit of luminous flux, defined as 1 cd × sr.
-
-### MagneticFlux
+Supertype for quantities and levels of dimension `𝐈 ^ -1 * 𝐋 ^ 2 * 𝐌 * 𝐓 ^ -2`
 
 #### Maxwell
 
@@ -551,6 +681,12 @@ The weber, an SI unit of magnetic flux, defined as 1 kg × m^2 / (A × s^2).
 
 ### MolarFlow
 
+```
+Unitful.MolarFlow
+```
+
+Supertype for quantities and levels of dimension `𝐍 / 𝐓`
+
 #### Katal
 
 ```
@@ -561,6 +697,12 @@ The katal, an SI unit of catalytic activity, defined as 1 mol of catalyzed subst
 
 ### Molarity
 
+```
+Unitful.Molarity
+```
+
+Supertype for quantities and levels of dimension `𝐍 / 𝐋 ^ 3`
+
 #### Molar
 
 ```
@@ -571,6 +713,12 @@ A unit for measuring molar concentration, equal to 1 mol/L.
 
 ### Power
 
+```
+Unitful.Power
+```
+
+Supertype for quantities and levels of dimension `𝐋 ^ 2 * 𝐌 * 𝐓 ^ -3`
+
 #### Watt
 
 ```
@@ -581,6 +729,12 @@ The watt, an SI unit of power, defined as 1 J / s.
 
 ### Pressure
 
+```
+Unitful.Pressure
+```
+
+Supertype for quantities and levels of dimension `𝐌 * 𝐋 ^ -1 * 𝐓 ^ -2`
+
 #### Atmosphere
 
 ```
@@ -631,6 +785,12 @@ The torr, a unit of pressure, defined as 1/760 atm.
 
 ### Velocity
 
+```
+Unitful.Velocity
+```
+
+Supertype for quantities and levels of dimension `𝐋 / 𝐓`
+
 #### SpeedOfLight
 
 ```
@@ -643,6 +803,12 @@ The speed of light in a vacuum, a unit of speed, defined as exactly 2.997,924,58
 
 ### Voltage
 
+```
+Unitful.Voltage
+```
+
+Supertype for quantities and levels of dimension `𝐈 ^ -1 * 𝐋 ^ 2 * 𝐌 * 𝐓 ^ -3`
+
 #### Volt
 
 ```
@@ -653,6 +819,12 @@ The volt, an SI unit of electric potential, defined as 1 W / A.
 
 ### Volume
 
+```
+Unitful.Volume
+```
+
+Supertype for quantities and levels of dimension `𝐋 ^ 3`
+
 #### Liter
 
 ```
@@ -773,57 +945,26 @@ The degree, a unit of angle. There are 360° in a circle.
 | `dBFS`        |         RootPowerRatio(1) |
 | `dBΩ`          |         1Ω |
 | `dBS`          |         1S |
-## Physical constants
-
-#### G
 
-```
-Unitful.G
-```
-
-A quantity representing the universal gravitational constant, equal to 6.674,30 × 10^-11 m^3 / (kg × s^2) (the CODATA 2018 recommended value).
-
-#### Na
-
-```
-Unitful.Na
-```
-
-A quantity representing Avogadro's constant, defined as exactly 6.022,140,76 × 10^23 / mol.
-
-#### R
-
-```
-Unitful.R
-```
-
-A quantity representing the molar gas constant, defined as Na × k.
+## Physical constants
 
-#### R∞
+#### c0
 
 ```
-Unitful.R∞
+Unitful.c0
 ```
 
-A quantity representing the Rydberg constant, equal to 1.097,373,156,8160 × 10^-7 / m (the CODATA 2018 recommended value).
-
-#### Z0
-
-```
-Unitful.Z0
-```
+A quantity representing the speed of light in a vacuum, defined as exactly 2.997,924,58 × 10^8 m/s.
 
-A quantity representing the impedance of free space, a constant defined as μ0 × c.
+`Unitful.c0` is a quantity (with units `m/s`) whereas `Unitful.c` is a unit equal to `c0`.
 
-#### c0
+#### G
 
 ```
-Unitful.c0
+Unitful.G
 ```
 
-A quantity representing the speed of light in a vacuum, defined as exactly 2.997,924,58 × 10^8 m/s.
-
-`Unitful.c0` is a quantity (with units `m/s`) whereas `Unitful.c` is a unit equal to `c0`.
+A quantity representing the universal gravitational constant, equal to 6.674,30 × 10^-11 m^3 / (kg × s^2) (the CODATA 2018 recommended value).
 
 #### gn
 
@@ -875,6 +1016,14 @@ Unitful.mp
 
 A quantity representing the rest mass of a proton, equal to 1.672,621,923,69 × 10^-27 kg (the CODATA 2018 recommended value).
 
+#### Na
+
+```
+Unitful.Na
+```
+
+A quantity representing Avogadro's constant, defined as exactly 6.022,140,76 × 10^23 / mol.
+
 #### q
 
 ```
@@ -883,21 +1032,37 @@ Unitful.q
 
 A quantity equal to the elementary charge, the charge of a single electron, with a value of exactly 1.602,176,634 × 10^-19 C. The letter `q` is used instead of `e` to avoid confusion with Euler's number.
 
-#### ħ
+#### R
 
 ```
-Unitful.ħ
+Unitful.R
 ```
 
-A quantity representing the reduced Planck constant, defined as h / 2π.
+A quantity representing the molar gas constant, defined as Na × k.
 
-#### Φ0
+#### R∞
 
 ```
-Unitful.Φ0
+Unitful.R∞
 ```
 
-A quantity representing the superconducting magnetic flux quantum, defined as h / (2 × q).
+A quantity representing the Rydberg constant, equal to 1.097,373,156,8160 × 10^-7 / m (the CODATA 2018 recommended value).
+
+#### Z0
+
+```
+Unitful.Z0
+```
+
+A quantity representing the impedance of free space, a constant defined as μ0 × c.
+
+#### ħ
+
+```
+Unitful.ħ
+```
+
+A quantity representing the reduced Planck constant, defined as h / 2π.
 
 #### ε0, ϵ0
 
@@ -932,6 +1097,14 @@ Unitful.σ
 
 A quantity representing the Stefan-Boltzmann constant, defined as π^2 × k^4 / (60 × ħ^3 × c^2).
 
+#### Φ0
+
+```
+Unitful.Φ0
+```
+
+A quantity representing the superconducting magnetic flux quantum, defined as h / (2 × q).
+
 ## Metric (SI) Prefixes
 
 | Prefix | Name | Power of Ten |
diff --git a/docs/tmp-script.jl b/docs/tmp-script.jl
new file mode 100644
index 00000000..6dba3acf
--- /dev/null
+++ b/docs/tmp-script.jl
@@ -0,0 +1,2 @@
+using Unitful: 𝐈  ,𝐉  ,𝐋  ,𝐌  ,𝐍  ,𝐓  ,𝚯
+