Describe the Parametric EQ's own tab (#370)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Sounds.md

@@ -589,12 +589,14 @@ A **Filter** (#335, #318) is Web Audio's `BiquadFilterNode`, every type it has.
 A **Parametric EQ** (#367) is up to 10 filters in a row, one per band. A double-click on the node
 opens its editor, in a sound FX and in an instrument alike.
 
-- **The editor** is a window over the editor. It leaves the tab usable, so *Play* can be pressed
-  while the bands are set. Its title bar moves it, *Close* closes it, and it closes by itself when
-  its node is deleted or another project is loaded. One window is open at a time: a double-click
-  on another Parametric EQ turns it to that node.
-- **The curve** shows 20 Hz to 20 kHz in octaves and -24 to +24 dB. The thick line is all bands
-  together, each band has a thin line in its own colour and a numbered handle.
+- **The editor** is a tab of its own (#370), named after its asset, with `EQ 2`, `EQ 3` … when
+  the asset has more than one. Every Parametric EQ gets its own tab, and a second double-click
+  brings the open one up. The tab closes with its node, its asset, or when another project is
+  loaded. *Play* is in the sound FX's tab, not in the EQ's.
+- **Delete** in the EQ's tab removes the picked band, never the node.
+- **The curve** takes the room of the tab and shows 20 Hz to 20 kHz in octaves and -24 to +24 dB.
+  The thick line is all bands together, each band has a thin line in its own colour and a
+  numbered handle.
 - **With the mouse:** a double-click on free space adds a peak there. Dragging a handle moves the
   band's frequency and, for a peak or a shelf, its gain. The mouse wheel over a handle, or anywhere
   while a band is picked, makes it a sixth of an octave narrower or wider. A right-click on a