The captions in SYR/LongerReport (and maybe elsewhere) have a large number of a[@id="_idIndexMarkerddddd"] with no obvious purpose.
<p class="Caption" lang="en-US">
<span class="CharOverride-3">Figure 2.1: The causal chain from <a id="_idIndexMarker11529">
</a> <a id="_idIndexMarker11530">
</a> emissions to resulting <a id="_idIndexMarker11531">
</a> <a id="_idIndexMarker11532">
</a> <a id="_idIndexMarker11533">
</a> warming of the <a id="_idIndexMarker11534">
</a> climate system. </span>Emissions of GHG have increased rapidly over recent decades <span class="CharOverride-3"> (panel (a))</span>. Global net<a id="_idIndexMarker11535">
</a> <a id="_idIndexMarker11536">
</a> anthropogenic GHG<a id="_idIndexMarker11537">
</a> <a id="_idIndexMarker11538">
</a> emissions include CO<span class="Subscript-body CharOverride-23">2</span> from fossil fuel combustion and industrial processes (CO<span class="CharOverride-25">2</span>-FFI) (dark green); net CO<span class="CharOverride-25">2</span> from land use, land-use change and forestry (CO <span class="Subscript-body _idGenCharOverride-1">2</span>-LULUCF) (green); CH<span class="Subscript-body CharOverride-23">4</span>; N<span class="Subscript-body CharOverride-23">2</span>O; and fluorinated gases (HFCs, PFCs, SF<span class="CharOverride-25">6</span>, NF<span class="CharOverride-25">3</span>) (light blue). These <a id="_idIndexMarker11539">
</a> <a id="_idIndexMarker11540">
</a> emissions have led to increases in the atmospheric concentrations of several GHGs including the three major well-mixed GHGs CO<span class="Subscript-body CharOverride-23">2</span>, CH<span class="Subscript-body CharOverride-23">4</span> and N<span class="Subscript-body CharOverride-23">2</span>O <span class="CharOverride-3"> (panel (b) </span> , annual<a id="_idIndexMarker11541">
</a> values). To indicate their relative importance each subpanel’s vertical extent for CO <span class="Subscript-body _idGenCharOverride-1">2</span>, CH<span class="Subscript-body _idGenCharOverride-1">4</span> and N<span class="Subscript-body _idGenCharOverride-1">2</span>O is scaled to match the assessed individual direct effect (and, in the case of CH<span class="Subscript-body CharOverride-23">4</span> indirect effect via atmospheric chemistry<a id="_idIndexMarker11542">
</a> <a id="_idIndexMarker11543">
</a> impacts on tropospheric ozone) of historical<a id="_idIndexMarker11544">
</a> <a id="_idIndexMarker11545">
</a> emissions on<a id="_idIndexMarker11546">
</a> <a id="_idIndexMarker11547">
</a> temperature change from 1850–1900 to 2010–2019. This estimate arises from an assessment of<a id="_idIndexMarker11548">
</a> <a id="_idIndexMarker11549">
</a> effective <a id="_idIndexMarker11550">
</a> <a id="_idIndexMarker11551">
</a> radiative forcing and <a id="_idIndexMarker11552">
</a> climate sensitivity. The global surface <a id="_idIndexMarker11553">
</a> <a id="_idIndexMarker11554">
</a> temperature (shown as annual anomalies from a 1850–1900<a id="_idIndexMarker11555">
</a> baseline) has increased by around 1.1°C since 1850–1900<span class="CharOverride-3"> (panel (c))</span>. The vertical bar on the right shows the estimated <a id="_idIndexMarker11556">
</a> <a id="_idIndexMarker11557">
</a> temperature <span class="CharOverride-4"> (very likely range) </span> during the warmest multi-century period in at least the last 100,000 years, which occurred around 6500 years ago during the current interglacial period (Holocene). Prior to that, the next most recent warm period was about 125,000 years ago, when the assessed multi-century<a id="_idIndexMarker11558">
</a> <a id="_idIndexMarker11559">
</a> temperature range [0.5°C to 1.5°C] overlaps the observations of the most recent decade. These past warm periods were caused by slow (multi-millennial) orbital variations. Formal detection and <a id="_idIndexMarker11560">
</a> attribution studies synthesise information from<a id="_idIndexMarker11561">
</a> climate models and observations and show that the best estimate is that all the <a id="_idIndexMarker11562">
</a> warming observed between 1850–1900 and 2010–2019 is caused by humans <span class="CharOverride-3"> (panel (d))</span>. The panel shows<a id="_idIndexMarker11563">
</a> <a id="_idIndexMarker11564">
</a> temperature change attributed to: total human influence; its decomposition into changes in GHG concentrations and other human drivers (aerosols, ozone and land-use change (land-use reflectance)); solar and volcanic drivers; and internal<a id="_idIndexMarker11565">
</a> climate variability. Whiskers show <span class="CharOverride-4">likely </span> ranges. <span class="CharOverride-4">{<span class="refs">
<span class="CharOverride-31">WGI SPM A.2.2, WGI Figure SPM.1, WGI Figure SPM.2, WGI TS2.2, WGI 2.1; WGIII Figure SPM.1, WGIII A.III.II.2.5.1</span>
</span>}</span>
</p>```
I think they can be deleted
The captions in SYR/LongerReport (and maybe elsewhere) have a large number of
a[@id="_idIndexMarkerddddd"]
with no obvious purpose.