Requested fixes.

doc/2-interface/asset-list.md

@@ -3,7 +3,7 @@
 ![instruments window](instruments.png)
 
 Buttons from left to right:
-- **Add**: pops up a menu to select which type of instrument to add.
+- **Add**: pops up a menu to select which type of instrument to add. if only one instrument type is available, the menu is skipped.
   - If the "Display instrument type menu when adding instrument" setting is disabled, this skips the menu and creates an instrument according to the chip under the cursor.
   - Right-clicking always brings up the menu.
 - **Duplicate**: Duplicates the currently selected instrument.

doc/2-interface/menu-bar.md

@@ -137,7 +137,7 @@ it's not really useful, unless you're a developer and want to use a command stre
 
 # edit
 
-- **...**: does nothing except prevent accidental clicks on later menu items.
+- **...**: does nothing except prevent accidental clicks on later menu items if the menu is too tall to fit on the program window.
 
 - **undo**: reverts the last action.
 - **redo**: repeats what you undid previously.

doc/8-advanced/piano.md

@@ -29,11 +29,5 @@ Key layout:
 - **Standard**: Black keys are 2/3 length.
 - **Continuous**: Black keys are full length.
 
-Value input pad: applies to mobile UI only.
-- **Disabled**
-- **Replace piano**
-- **Split (automatic)**
-- **Split (always visible)**
-
 **Share play/edit offset/range**: If disabled, the piano will keep different octave and range values for playback and non-playback states.
 **Read-only (can't input notes): Prevents note entry.