Add control pictures

CHANGELOG.md

@@ -65,6 +65,46 @@
 - Currency
   - `riyal`: ⃁
 
+- Keyboard labels
+  - `spacebar`: ␣
+
+- Control (Printable symbols representing non-printable characters)
+  - `nul`: ␀
+  - `soh`: ␁
+  - `stx`: ␂
+  - `etx`: ␃
+  - `eot`: ␄
+  - `enq`: ␅
+  - `ack`: ␆
+  - `bel`: ␇
+  - `bs`: ␈
+  - `ht`: ␉
+  - `lf`: ␊
+  - `vt`: ␋
+  - `ff`: ␌
+  - `cr`: ␍
+  - `so`: ␎
+  - `si`: ␏
+  - `dle`: ␐
+  - `dc.one`: ␑
+  - `dc.two`: ␒
+  - `dc.three`: ␓
+  - `dc.four`: ␔
+  - `nak`: ␕
+  - `syn`: ␖
+  - `etb`: ␗
+  - `can`: ␘
+  - `em`: ␙
+  - `sub`: ␚
+  - `esc`: ␛
+  - `fs`: ␜
+  - `gs`: ␝
+  - `rs`: ␞
+  - `us`: ␟
+  - `sp`: ␠
+  - `del`: ␡
+  - `nl`: ␤
+
 ### New in `emoji`
 
 - bigfoot: 🫈

src/modules/sym.txt

@@ -1254,6 +1254,9 @@ errorbar
   .circle.stroked ⧲
   .circle.filled ⧳
 
+// Keyboard labels.
+spacebar ␣
+
 gender {
   female ♀\vs{text}
     .double ⚢
@@ -1268,3 +1271,43 @@ gender {
   neuter ⚲
   trans ⚧\vs{text}
 }
+
+// Printable characters representing control (non-printable) characters
+control {
+  nul ␀ // NULL
+  soh ␁ // Start Of Heading
+  stx ␂ // Start of TeXt
+  etx ␃ // End of TeXt
+  eot ␄ // End Of Transmission
+  enq ␅ // ENQuiry
+  ack ␆ // ACKnowledge
+  bel ␇ // BELl
+  bs ␈ // BackSpace
+  ht ␉ // Horizontal Tabulation
+  lf ␊ // Line Feed
+  vt ␋ // Vertical Tabulation
+  ff ␌ // Form Feed
+  cr ␍ // Carriage Return
+  so ␎ // Shift Out
+  si ␏ // Shift In
+  dle ␐ // Data Link Escape
+  dc // Device Control
+    .one ␑
+    .two ␒
+    .three ␓
+    .four ␔
+  nak ␕ // Negative AcKnowledge
+  syn ␖ // SYNchronous idle
+  etb ␗ // End of Transmission Block
+  can ␘ // CANcel
+  em ␙ // End of Medium
+  sub ␚ // SUBstitute
+  esc ␛ // ESCape
+  fs ␜ // File Separator
+  gs ␝ // Group Separator
+  rs ␞ // Record Separator
+  us ␟ // Unit Separator
+  sp ␠ // SPace
+  del ␡ // DELete
+  nl ␤ // New Line
+}