Fix: update docs about snd

docs/tutorials/recording.md

@@ -19,7 +19,7 @@ Play something -- a pattern, a live input, anything that makes sound. When you'r
 The recording is now available as a sample:
 
 ```forth
-drums s .
+drums snd .
 ```
 
 ## Playback
@@ -27,10 +27,10 @@ drums s .
 Recorded samples are ordinary samples. Everything you can do with a loaded sample works here:
 
 ```forth
-drums s 0.5 speed .            ;; half speed
-drums s 0.25 begin 0.5 end .   ;; slice the middle quarter
-drums s 800 lpf 0.3 verb .     ;; filter and reverb
-drums s -1 speed .             ;; reverse
+drums snd 0.5 speed .            ;; half speed
+drums snd 0.25 begin 0.5 end .   ;; slice the middle quarter
+drums snd 800 lpf 0.3 verb .     ;; filter and reverb
+drums snd -1 speed .             ;; reverse
 ```
 
 ## Overdub
@@ -70,7 +70,7 @@ Record a foundation, then overdub to build up:
 "loop" dub
 
 ;; 4. play the result
-loop s .
+loop snd .
 ```
 
 Each overdub pass adds to what's already there. The buffer wraps, so longer passes layer cyclically over the original length.
@@ -80,16 +80,16 @@ Each overdub pass adds to what's already there. The buffer wraps, so longer pass
 Once you have a recording, carve it up:
 
 ```forth
-loop s 0.0 begin 0.25 end .    ;; first quarter
-loop s 0.25 begin 0.5 end .    ;; second quarter
-loop s 0.5 begin 0.75 end .    ;; third quarter
-loop s 0.75 begin 1.0 end .    ;; last quarter
+loop snd 0.0 begin 0.25 end .    ;; first quarter
+loop snd 0.25 begin 0.5 end .    ;; second quarter
+loop snd 0.5 begin 0.75 end .    ;; third quarter
+loop snd 0.75 begin 1.0 end .    ;; last quarter
 ```
 
 Combine with randomness for variation:
 
 ```forth
-loop s
+loop snd
 0.0 0.25 0.5 0.75 4 choose begin
 0.5 speed
 .