Enhance parallel package with overflow frame alignment, footnote handling and improved documentation

classes/diglot.lua

@@ -14,29 +14,45 @@ function class:_init (options)
       SILE.scratch.counters.folio = { value = 1, display = "arabic" }
    end)
 
-   self:declareFrame("a", {
-      left = "8.3%pw",
-      right = "48%pw",
-      top = "11.6%ph",
-      bottom = "80%ph",
-   })
-   self:declareFrame("b", {
-      left = "52%pw",
-      right = "100%pw-left(a)",
-      top = "top(a)",
-      bottom = "bottom(a)",
-   })
-   self:declareFrame("folio", {
-      left = "left(a)",
-      right = "right(b)",
-      top = "bottom(a)+3%ph",
-      bottom = "bottom(a)+8%ph",
-   })
+	self:declareFrame("a", {
+		left = "2.5%pw",
+		right = "47.5%pw",
+		top = "3.5%ph",
+		bottom = "85%ph",
+	})
+	self:declareFrame("b", {
+		left = "52.5%pw",
+		right = "100%pw-left(a)",
+		top = "top(a)",
+		bottom = "bottom(a)",
+	})
+	self:declareFrame("c", {
+		left = "left(a)",
+		right = "right(a)",
+		top = "bottom(a)",
+		bottom = "bottom(a)+10%ph", -- Adjust as needed for footnote space
+	})
+	self:declareFrame("d", {
+		left = "left(b)",
+		right = "right(b)",
+		top = "bottom(b)",
+		bottom = "bottom(b)+10%ph", -- Adjust as needed for footnote space
+	})
+	self:declareFrame("folio", {
+		left = "left(a)",
+		right = "right(b)",
+		top = "bottom(c)+1.5%ph",
+		bottom = "bottom(c)+4.75%ph",
+	})
    self:loadPackage("parallel", {
       frames = {
          left = "a",
          right = "b",
       },
+		ftn_frames = {
+			ftn_left = "c",
+			ftn_right = "d",
+		},
    })
 end