diff --git a/packages/plugos/compile.ts b/packages/plugos/compile.ts
index 9c1a2c27..16c14983 100644
--- a/packages/plugos/compile.ts
+++ b/packages/plugos/compile.ts
@@ -43,6 +43,10 @@ export async function compile(
       external: excludeModules,
       loader: {
         ".css": "text",
+        ".md": "text",
+        ".txt": "text",
+        ".html": "text",
+        ".hbs": "text",
         ".png": "dataurl",
         ".gif": "dataurl",
         ".jpg": "dataurl",
diff --git a/packages/plugos/syscalls/fs.node.ts b/packages/plugos/syscalls/fs.node.ts
index a0f077c7..bfec017d 100644
--- a/packages/plugos/syscalls/fs.node.ts
+++ b/packages/plugos/syscalls/fs.node.ts
@@ -1,4 +1,4 @@
-import { readdir, readFile, stat, writeFile, unlink } from "fs/promises";
+import { readdir, readFile, stat, writeFile, unlink, mkdir } from "fs/promises";
 import path from "path";
 import type { SysCallMapping } from "../system";
 
@@ -46,6 +46,7 @@ export default function fileSystemSyscalls(root: string = "/"): SysCallMapping {
       text: string
     ): Promise<FileMeta> => {
       let p = resolvedPath(filePath);
+      await mkdir(path.dirname(p), { recursive: true });
       await writeFile(p, text);
       let s = await stat(p);
       return {
diff --git a/packages/plugs/lib/yaml_page.ts b/packages/plugs/lib/yaml_page.ts
index c0deaafe..efa29472 100644
--- a/packages/plugs/lib/yaml_page.ts
+++ b/packages/plugs/lib/yaml_page.ts
@@ -1,6 +1,9 @@
-import { findNodeOfType, ParseTree, renderToText, replaceNodesMatching, traverseTree } from "@silverbulletmd/common/tree";
+import { findNodeOfType, traverseTree } from "@silverbulletmd/common/tree";
 import { parseMarkdown } from "@silverbulletmd/plugos-silverbullet-syscall/markdown";
-import { readPage, writePage } from "@silverbulletmd/plugos-silverbullet-syscall/space";
+import {
+  readPage,
+  writePage,
+} from "@silverbulletmd/plugos-silverbullet-syscall/space";
 import YAML from "yaml";
 
 export async function readYamlPage(
@@ -40,3 +43,11 @@ export async function readYamlPage(
 
   return data;
 }
+
+export async function writeYamlPage(
+  pageName: string,
+  data: any
+): Promise<void> {
+  const text = YAML.stringify(data);
+  await writePage(pageName, "```yaml\n" + text + "\n```");
+}
diff --git a/packages/plugs/markdown/util.ts b/packages/plugs/markdown/util.ts
index 739e568d..659fda2a 100644
--- a/packages/plugs/markdown/util.ts
+++ b/packages/plugs/markdown/util.ts
@@ -9,20 +9,38 @@ export function encodePageUrl(name: string): string {
   return name.replaceAll(" ", "_");
 }
 
-export async function cleanMarkdown(text: string): Promise<string> {
+export async function cleanMarkdown(
+  text: string,
+  validPages?: string[]
+): Promise<string> {
   let mdTree = await parseMarkdown(text);
   replaceNodesMatching(mdTree, (n) => {
     if (n.type === "WikiLink") {
       const page = n.children![1].children![0].text!;
+      if (validPages && !validPages.includes(page)) {
+        return {
+          // HACK
+          text: `_${page}_`,
+        };
+      }
       return {
         // HACK
         text: `[${page}](/${encodePageUrl(page)})`,
       };
     }
     // Simply get rid of these
-    if (n.type === "CommentBlock" || n.type === "Comment") {
+    if (
+      n.type === "CommentBlock" ||
+      n.type === "Comment" ||
+      n.type === "NamedAnchor"
+    ) {
       return null;
     }
+    if (n.type === "Hashtag") {
+      return {
+        text: `__${n.children![0].text}__`,
+      };
+    }
     if (n.type === "FencedCode") {
       let codeInfoNode = findNodeOfType(n, "CodeInfo");
       if (!codeInfoNode) {