New answers:
+Label labelcount: use the "value" of a label in counter operations
+Label optclash: LaTeX package options clash
+Label printvar: print the contents of a "variable"
+Label unicode: "Unicode for TeX users"
Relabelled answers:
<none>
Revised answers:
+Label bug: reworded in the light of more on-line help available
+Label dvi: tidied, mention of XeTeX and its XDV format
+Label ECfonts: brought up to date (a bit: more remains to be done)
+Label editors: updated comments about TeXworks
+Label include: clarification of page number constraint
+Label LaTeX3: add git repository link, mention state of formats
+Label latex-books: add "LaTeX Beginner's Guide" and Herbert Voss's UIT books
+Label mathml: outline the use of MathJax
+Label missbegdoc: rewritten to take account of the BOM issue
+Label multind: add amsmind and imakeidx packages
+Label music: reflect restructuring of fonts
+Label sysmac: mention root privilege requirement for MacTeX
+Label sysother: discourage any hope of a current VMS version
+Label tds: toned-down and untangled the text, a bit
+Label texthings: mention ProTeXt among distributions
+Label TUG* corrected contact details
+Label tutbitslatex: revise statement about Herbert Voss's mathmode book
incorporate para about TUG India tutorials from doc-dirs
+Label underline: remove obsolete statement about ulem docs
+Label virtualfonts: rewrite, improving clarity (I hope...)
+Label wordcount: add health warnings for detex-like counts
Deleted answers:
+Label doc-dirs: subsumed in label tutbitslatex
