/* von Soden's cross-reference mark - the AHw arrow, #V in the data.
A circle with a stem tangent to its right edge (the "q and d combined" shape).
Drawn as inline SVG rather than set in the LAD_vonSoden webfont. That font's
outline was cut against a normal-weight reference - a 118u stem and a 101u
MONOLINE ring on a 1000u em - while .ahw-entry renders Noto Serif at weight
200, whose stems are 42u and whose hairlines are 31u. The mark therefore came
out about three times the weight of the text it sits in, and because the ring
is unmodulated (a serif bowl thins from 43u at the sides to 31u top and
bottom) it read as a highlight rather than as a character. As SVG the weight
is a single number - see --ahw-arrow-weight below.
Geometry is in units of 1/100 em, measured off the printed volume (AHw p.180,
snippet ahw_e_auto-page_0001-010, "ebbutum (Abstr. zu ebbu 7)"). The
box is one em tall and vertical-align drops it 0.21em, so the text baseline
falls at y=79 - the -210 descent the font used. In print:
- the bowl is EXACTLY x-height: its top touches the x-height line and its
underside rests on the baseline. Measured 34px against a 34px x-height.
So with Noto Serif's x-height of 543/1000, the bowl's outer diameter is
54.3u: cy 51.85 +/- (r 25.35 + half the stroke) spans y 24.7 to y 79.
The first cut here made the bowl 58.2u - taller than any lowercase letter
- which is what made it loom.
- the stem runs ascender to descender, not edge to edge: 47px above the
baseline (the ascender, 760/1000 -> y 3) and 14px below (the descender,
210/1000 -> y 100).
- the stem is centred on the bowl's right tangent, so the two merge. */
:root {
/* Stroke weight of the AHw arrow, in 1/100 em - the same units per 1000-em as
the measurements above, divided by ten. 3.6 (36u) sits between the text's
31u hairline and its 42u stem, which is where a monoline mark has to land
to read as the same colour as modulated type.
RETUNED 2026-09-16 when .ahw-entry moved from Noto Serif 200 to 300. The stems
nearly double across that step - measured in a browser at 1000px: hairline
31u -> 40u, stem 43u -> 68u (the 200 figures reproduce the values derived
above, which is what validates the method). The mark has to move with them or
it drops back to looking like a hairline scratch. Midpoint 54u -> 5.4.
Alternates, kept so the decision can be revisited without re-deriving it:
4.0 the text's own hairline at 300 - lightest that still reads
5.4 IN USE (midpoint of hairline and stem, as before)
6.8 the text's own stem at 300; a monoline at stem weight reads slightly
heavy, having no thin parts to relieve it, but it is the sturdy option
The weight-200 values were 3.1 / 3.6 / 4.2 if .ahw-entry ever goes back. */
--ahw-arrow-weight: 5.4;
/* ...and the same mark inside the XML editor, which needs its own value
because editor-xml.html loads neither page.css nor page/core/variables.css.
--ahw-font-family and --font-weight-extralight are therefore UNDEFINED
there, so .ahw-entry's font-family and font-weight both fall back and the
editor renders AHw in its own face at normal weight (~94u stems) instead of
Noto Serif 200 (42u stems). A stroke tuned for 42u stems is invisible
beside 94u ones. 7.0 sits between the ratio the printed volume uses (a mark
~0.7 of the text stem -> 6.6) and the ratio chosen for the entry view
(36/42 -> 8.0). Tune freely; it changes nothing outside the editor.
The real fix is to load variables.css in the editor, which would also
restore the typeface - a bigger change than this knob, so it is left open.
Alternates:
6.6 the ratio the printed volume uses (mark ~0.7 of the text stem)
7.0 IN USE
8.0 the ratio chosen for the entry view (36/42), i.e. the heaviest
option that is still internally consistent - use this if the mark
ever needs to carry more in the editor */
--ahw-arrow-weight-editor: 7;
}
.custom-icon {
height: 1em;
width: .60em;
vertical-align: -.21em;
stroke-width: var(--ahw-arrow-weight, 3.6);
/* Softened terminals. A round cap adds half the stroke width beyond each
endpoint - 1.8u at the entry weight, i.e. 0.018em - so the corners lose
their hard edge without the mark reading as rounded. The stem's endpoints
are pulled in by that much in the markup (y 4.8 -> 98.2) so the CAP, not
the line, lands on the ascender and the descender. */
stroke-linecap: round;
/* ...and the caps therefore sit a hair outside the viewBox at the heavier
editor weight. Without this they would be clipped flat, which is exactly
the corner the round cap is there to remove. */
overflow: visible;
/* The webfont carried this gap inside its advance width (1010u advance, ink
ending at 648u). Reproduced so replacing the glyph does not silently
re-space ~40,000 cross-references. NB print spacing cannot settle whether
it is right: AHw is set justified, so its inter-word gaps vary per line. */
margin-right: .36em;
}
/* Editor variant. See --ahw-arrow-weight-editor above for why it exists. */
.custom-icon-edit {
stroke-width: var(--ahw-arrow-weight-editor, 7);
}
/* von Soden's second mark: the cross-shaped sign on the liver, printed where a
liver omen describes parts lying across one another ("ahnl. v Leberteilen KAR
454, 30f. (wie )", egeru, AHw p.190). Not a symmetric cross - measured
off snippet ahw_e_auto-page_0011-003 it is a horizontal bar crossed by a steep
diagonal that leans right as it descends, about 31 degrees off vertical,
meeting the bar at 60% of its width. 44px wide by 40px tall against a 34px
x-height, sitting 2px above the x-height line and 3px below the baseline -
hence a box 0.73em wide, the bar at y 52.5 and the diagonal from (24, 21.5)
to (62, 84). Wider than it is tall, and wider than the arrow. No trailing
margin: unlike the arrow it inherits no sidebearing from a font, and it is
normally set inside parentheses. */
.custom-icon-liver {
width: .73em;
margin-right: 0;
}
/* von Soden's third mark, the Glossenkeil (AHw I p. IV, Abs. 6): two parallel strokes
falling to the right at ~36 degrees, from just above the x-height line to just below
the baseline. Traced off vol. I p. VI. It stands between two words, so the gaps come
from the stylesheet and the arrow's margin is not wanted. */
.custom-icon-glossenkeil {
width: .63em;
margin-right: 0;
}
/* Wrapper that hangs the site tooltip off the liver sign in the entry view.
.tooltip-container is display:inline-block, so left alone it would build its
own line box around the mark: the strut would add its descent below the SVG
and could push the AHw line apart. line-height:0 collapses that strut, so the
box is exactly the 1em SVG, and the wrapper then takes over the baseline shift
the mark itself normally carries - net effect on the line is identical to the
bare