Answer prose round 1 and product-owner round 1: plainer resolvedRef, checkCalcFields and name-fence docs, geo-se.py's pointers name their headings, Fake and Columns keep a godoc line, and arm.go's Layout line names what an arm is

inline.go

@@ -18,6 +18,7 @@ type Template struct {
 	n node
 }
 
+// Fake renders the template once, each {…} drawn afresh.
 func (t *Template) Fake() string {
 	t.g.mu.Lock()
 	defer t.g.mu.Unlock()