diff --git a/src/doc/doc.ts b/src/doc/doc.ts
index e1735fd..f384c09 100644
--- a/src/doc/doc.ts
+++ b/src/doc/doc.ts
@@ -1,5 +1,4 @@
 import type { Agd, Id, Pub, Soc, Spc, Usr } from "../db/typ.ts"
-import type { Has } from "../ser/nav.ts"
 import { usr_r } from "../db/usr.ts"
 import { pas_of_usr, type Pas } from "./pas.ts"
 import { pub_usr } from "./pub.ts"
@@ -40,6 +39,15 @@ export type Doc = {
 	},
 }
 
+export type Has = {
+	usr?: Usr["_id"],
+	soc?: Soc["_id"],
+	agd?: Agd["_id"],
+	spc?: Spc["_id"],
+	rec?: "cdt" | "dbt" | "ern" | "act",
+}
+
+
 async function usr(
 	pas: Pas | null,
 	_id: Usr["_id"],
diff --git a/src/frm/frm.ts b/src/frm/frm.ts
new file mode 100644
index 0000000..195ce6e
--- /dev/null
+++ b/src/frm/frm.ts
@@ -0,0 +1,7 @@
+import { Usr } from "../db/typ.ts"
+
+export type Frm = {
+	frm: "psg",
+	nbr?: Required<Usr>["nbr"],
+	pas?: Required<Usr>["pas"],
+}
diff --git a/src/frm/psg.tsx b/src/frm/psg.tsx
new file mode 100644
index 0000000..02bc634
--- /dev/null
+++ b/src/frm/psg.tsx
@@ -0,0 +1,2 @@
+function Psg(
+)
diff --git a/src/nav/fet.ts b/src/nav/fet.ts
new file mode 100644
index 0000000..458f169
--- /dev/null
+++ b/src/nav/fet.ts
@@ -0,0 +1,10 @@
+import type { Nav } from "../ser./nav/nav.ts"
+
+export async function pos<T>(
+	h: Nav,
+) {
+	const res = await fetch(`/p`, { method: "POST", body: JSON.stringify(h) })
+	const r = await res.json() as T
+	if (r && !("psg" in h)) await navpas()
+	return r
+}
diff --git a/src/ser/nav.ts b/src/nav/nav.ts
similarity index 54%
rename from src/ser/nav.ts
rename to src/nav/nav.ts
index 3263ed8..50b112f 100644
--- a/src/ser/nav.ts
+++ b/src/nav/nav.ts
@@ -1,26 +1,18 @@
-import { Agd, Soc, Spc, Usr } from "../db/typ.ts"
-import { Psg } from "../que/psg.ts"
+import type { Has } from "../doc/doc.ts"
+import type { Pas } from "../doc/pas.ts"
+import { Frm } from "../frm/frm.ts"
 
-export type Has = {
-	usr?: Usr["_id"],
-	soc?: Soc["_id"],
-	agd?: Agd["_id"],
-	spc?: Spc["_id"],
-	rec?: "cdt" | "dbt" | "ern" | "act",
-	que?: Que,
+export type Nav = {
+	has: Has,
+	frm?: Frm,
+	pas?: Pas,
 }
 
-export type Que = Psg | {
-	que: "sig",
-	sig: string,
-} | {
-	que: "act",
-	act: "cdt" | "ern",
-}
+export const nav: Nav = { has: {} }
 
-export function has(
+export function hasque(
 	s: string,
-): Has {
+) {
 	const h: Has = {}
 	const [p, q] = decodeURI(s).substring(1).split("?")
 	if (p.startsWith("t")) h.spc = p
@@ -31,7 +23,9 @@ export function has(
 		else if (h.spc == undefined && p.startsWith("#")) h.spc = p.substring(1)
 		else if ((h.usr || h.soc) && ["cdt", "dbt", "ern", "act"].includes(p)) h.rec = p as Has["rec"]
 	})
-	if (!q || q.length == 0) return h
-	else if (q.startsWith("s=")) h.que = { que: "sig", sig: q.substring(2) }
-	return h
+	nav.has = h
+	delete nav.frm
+	if (!q || q.length == 0) return nav
+	else if (q == "psg") nav.frm = { frm: "psg" }
+	return nav
 }
diff --git a/src/ser/ser.ts b/src/ser/ser.ts
index 17997b1..b74c642 100644
--- a/src/ser/ser.ts
+++ b/src/ser/ser.ts
@@ -1,5 +1,5 @@
 import { utc_dt } from "../uti/utc.ts"
-import { Has } from "./nav.ts"
+import { Nav } from "../nav/nav.ts"
 
 function log(
 	utc: number,
@@ -31,9 +31,9 @@ async function ser(
 		} case "q": {
 			const _c = req.headers.get("cookie")?.split(";").find(c => c.startsWith("q="))
 			try {
-				const h: Has = await req.json()
-				log(utc, `${r}?${h.que ? h.que : ""}`, 200)
-				return new Response(JSON.stringify(h), { status: 200 })
+				const nav: Nav = await req.json()
+				log(utc, `${r}?${JSON.stringify(nav.has)}`, 200)
+				return new Response(JSON.stringify(nav), { status: 200 })
 			} catch {
 				log(utc, `${r}`, 400)
 				return new Response(null, { status: 400 })
diff --git a/tst/doc.test.ts b/tst/doc.test.ts
index 3af7215..1f4069d 100644
--- a/tst/doc.test.ts
+++ b/tst/doc.test.ts
@@ -1,8 +1,8 @@
 import { db } from "../src/db/db.ts"
 import { usr_r } from "../src/db/usr.ts"
-import { has } from "../src/ser/nav.ts"
 import { doc } from "../src/doc/doc.ts"
 import { pas_aut, pas_of_usr, pas_soc, pas_usr } from "../src/doc/pas.ts"
+import { hasque } from "../src/nav/nav.ts";
 import { fil } from "./fil.ts"
 import { assertEquals } from "@std/assert"
 
@@ -22,17 +22,6 @@ Deno.test("pas", async () => {
 	], [false, false, false])
 })
 
-Deno.test("nav", () => {
-	assertEquals(has(""), {})
-	assertEquals(has("#2"), { usr: 2 })
-	assertEquals(has("#s1-2-a3"), { soc: 1, usr: 2, agd: 3 })
-	assertEquals(has("#a3-s1-2"), { soc: 1, usr: 2, agd: 3 })
-	assertEquals(has("#s1-2-ern"), { soc: 1, usr: 2, rec: "ern" })
-	assertEquals(has("##中文123"), { spc: "中文123" })
-	assertEquals(has(encodeURI("##中文123")), { spc: "中文123" })
-	assertEquals(has("##中文123?s=123abc"), { spc: "中文123", que: { que: "sig", sig: "123abc" } })
-})
-
 Deno.test("pas", async () => {
 	const [u, s] = [fil.usr[2], fil.soc[0]]
 	assertEquals(
@@ -44,12 +33,12 @@ Deno.test("pas", async () => {
 Deno.test("doc", async () => {
 	const [u, s] = [fil.usr[2], fil.soc[0]]
 	assertEquals(
-		await doc(null, has(`#s${s._id}-${u._id}`)),
+		await doc(null, hasque(`#s${s._id}-${u._id}`).has),
 		{ usr: { _id: u._id } },
 	)
 	const p = await pas_of_usr({ _id: u._id, nam: u.nam })
 	assertEquals(
-		(await doc(p, has(`#s${s._id}-${u._id}`)))?.usr?.soc,
+		(await doc(p, hasque(`#s${s._id}-${u._id}`).has))?.usr?.soc,
 		[{ soc: s._id, nam: s.nam, sec: true }],
 	)
 })
diff --git a/tst/nav.test.ts b/tst/nav.test.ts
new file mode 100644
index 0000000..efbd7b0
--- /dev/null
+++ b/tst/nav.test.ts
@@ -0,0 +1,13 @@
+import { assertEquals } from "@std/assert/equals"
+import { hasque } from "../src/nav/nav.ts"
+
+Deno.test("nav", () => {
+	assertEquals(hasque(""), { has: {} })
+	assertEquals(hasque("#2"), { has: { usr: 2 } })
+	assertEquals(hasque("#s1-2-a3"), { has: { soc: 1, usr: 2, agd: 3 } })
+	assertEquals(hasque("#a3-s1-2"), { has: { soc: 1, usr: 2, agd: 3 } })
+	assertEquals(hasque("#s1-2-ern"), { has: { soc: 1, usr: 2, rec: "ern" } })
+	assertEquals(hasque("##中文123"), { has: { spc: "中文123" } })
+	assertEquals(hasque(encodeURI("##中文123")), { has: { spc: "中文123" } })
+	assertEquals(hasque("##中文123?psg"), { has: { spc: "中文123" }, frm: { frm: "psg" } })
+})
diff --git a/tst/ser.test.ts b/tst/ser.test.ts
index 9d58b04..33572a8 100644
--- a/tst/ser.test.ts
+++ b/tst/ser.test.ts
@@ -1,16 +1,16 @@
 import { db } from "../src/db/db.ts"
-import { has } from "../src/ser/nav.ts"
+import { hasque } from "../src/nav/nav.ts"
 import { assertEquals } from "@std/assert"
 
 
 await db("tst", true, true)
 
 Deno.test("ser", async () => {
-	const h = has("##中文123?s=123abc")
+	const n = hasque("##中文123?s=123abc")
 	const res = await fetch("http://localhost:728/p", {
 		method: "POST",
 		headers: { "Content-Type": "application/json" },
-		body: JSON.stringify(h),
+		body: JSON.stringify(n),
 	})
-	assertEquals(await res.json(), h)
+	assertEquals(await res.json(), n)
 })