diff --git a/Architecture.md b/Architecture.md
index 8e61f44..e7b662a 100644
--- a/Architecture.md
+++ b/Architecture.md
@@ -176,9 +176,13 @@ src/viewport/          WorldViewport (the drawing of a world or a holder, the ba
                        symbolIcons (the SVG files in icons/, parsed once, in the theme's colours, #175),
                        FileLibrary (load once, never retry a failure, tell the listeners) ← TextureLibrary, FontLibrary;
                        generatedPictures (the drawn half of the picture path, #185: one picture per asset kept
-                       under its revision key, the older one freed when the newer is drawn; who draws which asset
-                       type, and the factory that looks an asset up in the open project) — no GPU, so it is measured
-                       without a browser,
+                       under its revision key, the older one freed when the newer is drawn — or, while a shader
+                       still names it, right after the redraw that asked or on a later ask, #293: the mesh of an
+                       object with a shader asset keeps its picture bound until it syncs, and a source destroyed
+                       under it made Pixi warn "destroyed while still bound to a shader" with every change to the
+                       drawing; `TextureLibrary` tells by the bind group listening for `change` on the source; who
+                       draws which asset type, and the factory that looks an asset up in the open project) — no
+                       GPU, so it is measured without a browser,
                        vectorArtPicture (the rasteriser of #129: the draw commands of
                        core/model/vectorPath painted onto a render texture of the canvas size, at twice its
                        resolution; registers vector art in both halves of the picture path; PaintCache keeps a
diff --git a/Development.md b/Development.md
index bd9ec68..b6b6c3a 100644
--- a/Development.md
+++ b/Development.md
@@ -18,7 +18,7 @@ php tests/php/accounts.test.php                               # the API's accoun
                                                               #   has and the web server's container has not (SKIP there)
 php tests/php/snapshots.test.php                              # the snapshot store (#231), the same way
 php tests/php/releases.test.php                               # the release store (#266), the same way
-node tools/seed-e2e.mjs && node tools/e2e.mjs                 # 1667 editor checks, screenshots in /tmp/gm-e2e-*.png
+node tools/seed-e2e.mjs && node tools/e2e.mjs                 # 1668 editor checks, screenshots in /tmp/gm-e2e-*.png
 GM_STEPS=20 node tools/e2e.mjs                                # or 1-12, or 6,20 — a subset while working on one step
 ./e2e.sh start [GM_STEPS]                                     # the same run detached, see below
 ./e2e.sh status                                               # live progress, or the last run's result
diff --git a/Vector-Art.md b/Vector-Art.md
index 6e03c31..ac5686d 100644
--- a/Vector-Art.md
+++ b/Vector-Art.md
@@ -135,8 +135,9 @@ Selecting a shape — in the tab or in the list — gives it its own rows:
   **Outline** switch; with the switch on, **Line type** and Line width appear. The switch *gives and
   takes away* the outline rather than hiding it, and a width of zero is no outline, so the row stops
   at 0.1.
-- **Add shape** sits below. With several shapes selected, **Delete shapes** next to it removes
-  them all.
+- With several shapes selected, **Delete shapes** at the bottom removes them all. There is no
+  button that adds a shape (#293): a shape without points could not be given any, the Pen draws
+  a new one.
 
 With several shapes selected, the order buttons and the style rows are those of the one clicked
 last. A dragged colour or opacity slider is one undo step, not one per pixel of the drag. Selecting
@@ -148,7 +149,7 @@ selected.
 **A layer** is a stack of shapes with a name and an eye. Every drawing has at least one, and the
 layers are drawn bottom to top like the shapes on them.
 
-- **One layer is the one worked on**, marked in the LAYERS list. The Pen and **Add shape** put new
+- **One layer is the one worked on**, marked in the LAYERS list. The Pen puts new
   shapes on it, and the SHAPES list shows what is on it. A click on a layer's row picks it;
   selecting a shape, in the tab or in the list, picks the layer that shape stands on.
 - **The eye** hides a layer. A hidden layer is neither in the tab nor in the picture a sprite wears,