More detail in a few help pages

1 files changed, 5 insertions, 2 deletions

diff --git a/docs/help/depth.html b/docs/help/depth.html
index 03fcaea6..4657a433 100644
--- a/docs/help/depth.html
+++ b/docs/help/depth.html
@@ -7,10 +7,13 @@
 <h1 id="circle-with-two-dots-"><a class="header" href="#circle-with-two-dots-">Circle With Two Dots (<code><span class='Modifier2'>⚇</span></code>)</a></h1>
 <h2 id="𝔽𝕘-𝕩-𝕨-𝔽𝕘-𝕩-depth"><a class="header" href="#𝔽𝕘-𝕩-𝕨-𝔽𝕘-𝕩-depth"><code><span class='Function'>𝔽</span><span class='Modifier2'>⚇</span><span class='Value'>𝕘</span> <span class='Value'>𝕩</span></code>, <code><span class='Value'>𝕨</span> <span class='Function'>𝔽</span><span class='Modifier2'>⚇</span><span class='Value'>𝕘</span> <span class='Value'>𝕩</span></code>: Depth</a></h2>
 <p><a class="fulldoc" href="../doc/depth.html#the-depth-modifier">→full documentation</a></p>
-<p>Apply <code><span class='Function'>𝔽</span></code> to the cells of the arguments at depth given in <code><span class='Value'>𝕘</span></code>.</p>
-<a class="replLink" title="Open in the REPL" target="_blank" href="https://mlochbaum.github.io/BQN/try.html#code=MeKKuOKGk+KahzEg4p+o4p+oMSwyLDPin6ksIOKfqDQsNSw24p+p4p+pCgoxIOKGk+KahzEg4p+o4p+oMSwyLDPin6ksIOKfqDQsNSw24p+p4p+p">↗️</a><pre>    <span class='Number'>1</span><span class='Modifier2'>⊸</span><span class='Function'>↓</span><span class='Modifier2'>⚇</span><span class='Number'>1</span> <span class='Bracket'>⟨⟨</span><span class='Number'>1</span><span class='Separator'>,</span><span class='Number'>2</span><span class='Separator'>,</span><span class='Number'>3</span><span class='Bracket'>⟩</span><span class='Separator'>,</span> <span class='Bracket'>⟨</span><span class='Number'>4</span><span class='Separator'>,</span><span class='Number'>5</span><span class='Separator'>,</span><span class='Number'>6</span><span class='Bracket'>⟩⟩</span>
+<p>Apply <code><span class='Function'>𝔽</span></code> to the cells of the arguments at depth given in <code><span class='Value'>𝕘</span></code>. Negative numbers count down from the top level and non-negative ones from the bottom up.</p>
+<a class="replLink" title="Open in the REPL" target="_blank" href="https://mlochbaum.github.io/BQN/try.html#code=MeKKuOKGk+KahzEg4p+o4p+oMSwyLDPin6ksIOKfqDQsNSw24p+p4p+pCgoxIOKGk+KahzEg4p+o4p+oMSwyLDPin6ksIOKfqDQsNSw24p+p4p+pCgooK8K04oaVKeKahzAg4p+oMiw04oC/Nywz4p+pICAjIEltcGxlbWVudHMgcGVydmFzaW9u">↗️</a><pre>    <span class='Number'>1</span><span class='Modifier2'>⊸</span><span class='Function'>↓</span><span class='Modifier2'>⚇</span><span class='Number'>1</span> <span class='Bracket'>⟨⟨</span><span class='Number'>1</span><span class='Separator'>,</span><span class='Number'>2</span><span class='Separator'>,</span><span class='Number'>3</span><span class='Bracket'>⟩</span><span class='Separator'>,</span> <span class='Bracket'>⟨</span><span class='Number'>4</span><span class='Separator'>,</span><span class='Number'>5</span><span class='Separator'>,</span><span class='Number'>6</span><span class='Bracket'>⟩⟩</span>
 ⟨ ⟨ 2 3 ⟩ ⟨ 5 6 ⟩ ⟩
 
     <span class='Number'>1</span> <span class='Function'>↓</span><span class='Modifier2'>⚇</span><span class='Number'>1</span> <span class='Bracket'>⟨⟨</span><span class='Number'>1</span><span class='Separator'>,</span><span class='Number'>2</span><span class='Separator'>,</span><span class='Number'>3</span><span class='Bracket'>⟩</span><span class='Separator'>,</span> <span class='Bracket'>⟨</span><span class='Number'>4</span><span class='Separator'>,</span><span class='Number'>5</span><span class='Separator'>,</span><span class='Number'>6</span><span class='Bracket'>⟩⟩</span>
 ⟨ ⟨ 2 3 ⟩ ⟨ 5 6 ⟩ ⟩
+
+    <span class='Paren'>(</span><span class='Function'>+</span><span class='Modifier'>´</span><span class='Function'>↕</span><span class='Paren'>)</span><span class='Modifier2'>⚇</span><span class='Number'>0</span> <span class='Bracket'>⟨</span><span class='Number'>2</span><span class='Separator'>,</span><span class='Number'>4</span><span class='Ligature'>‿</span><span class='Number'>7</span><span class='Separator'>,</span><span class='Number'>3</span><span class='Bracket'>⟩</span>  <span class='Comment'># Implements pervasion
+</span>⟨ 1 ⟨ 6 21 ⟩ 3 ⟩
 </pre>