Used __builtin_wasm_memory_size(0) instead of having the Javascript code call init_mem with the initial page count. Added a simple <div> below the canvas that can hold any number of labels that can be filled/updated through jsSetLabel which lives in a new file misc_functions.js.

data/misc_functions.js

@@ -0,0 +1,40 @@
+
+import { appGlobals } from './globals.js'
+import { wasmPntrToJsString, wasmPntrAndLengthToJsString } from './wasm_functions.js'
+
+export function jsSetLabel(labelIdStrPntr, labelStrPntr)
+{
+	let labelIdStr = wasmPntrToJsString(labelIdStrPntr);
+	let labelStr = wasmPntrToJsString(labelStrPntr);
+	var labelContainer = document.getElementById("label_container");
+	if (labelContainer != null)
+	{
+		var foundExistingLabel = false;
+		var existingLabels = labelContainer.getElementsByClassName("wasm_label");
+		if (existingLabels != null)
+		{
+			for (var lIndex = 0; lIndex < existingLabels.length; lIndex++)
+			{
+				if (existingLabels[lIndex].id == labelIdStr)
+				{
+					existingLabels[lIndex].textContent = labelStr;
+					foundExistingLabel = true;
+					break;
+				}
+			}
+		}
+		if (!foundExistingLabel)
+		{
+			const newLabel = document.createElement("p");
+			newLabel.className = "wasm_label";
+			newLabel.id = labelIdStr;
+			newLabel.textContent = labelStr;
+			labelContainer.appendChild(newLabel);
+		}
+	}
+	else { console.error("Failed to file container with id \"label_container\"!"); }
+}
+
+export let jsMiscFunctions = {
+	jsSetLabel: jsSetLabel,
+};